P2 Codes – TroubleCodes.net

OBDII P Code Definitions.

Be sure to double check the codes. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here. Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles.

[ P0000-0100 ] [ P0100-0200 ] [ P0200-0300 ] [ P0300-0400 ] [ P0400-0500 ] [ P0500-0600 ] [ P0600-0700 ] [ P0700-0800 ] [ P0800- ]
[ P1000-1100 ] [ P1100-1200 ] [ P1200-1300 ] [ P1300-1400 ] [ P1400-1500 ] [ P1500-1600 ] [ P1600-1700 ] [ P1700-1800 ] [ P1800- ]
[ P2000-2100 ] [ P2100-2200 ] [ P2200-2300 ] [ P2300-2400 ] [ P2400-2500 ] [ P2500-2600 ] [ P2600-2700 ] [ P2700-2800 ] [ P2800- ]
[ P3000-3100 ] [ P3100-3200 ] [ P3200-3300 ] [ P3300-3400 ] [ P3400-3500 ] [ P3500- ]

[ Acura ] [ Alfa Romeo ] [ Audi ] [ BMW ] [ Buick ] [ Cadillac ] [ Chevrolet ] [ Chrysler ] [ Citroen ] [ Daewoo ] [ Daihatsu ] [ Dodge ] [ Eagle ] [ Ford ] [ Freightliner ] [ GEO ] [ Genesis ] [ GM ] [ GMC ] [ Honda ] [ Hummer ] [ Hyundai ] [ Infiniti ] [ Isuzu ] [ Jaguar ] [ Jeep ] [ Kenworth ] [ Kia ] [ Lamborghini ] [ Land Rover ] [ Lexus ] [ Lincoln ] [ Mack ] [ Mahindra ] [ Mazda ] [ Mercedes-Benz ] [ Mercury ] [ Mini ] [ Mitsubishi ] [ Nissan ] [ Oldsmobile ] [ Opel ] [ Peterbilt ] [ Peugeot ] [ Plymouth ] [ Pontiac ] [ Porsche ] [ Ram ] [ Renault ] [ Saab ] [ Saturn ] [ Scion ] [ Subaru ] [ Suzuki ] [ Toyota ] [ Volvo ] [ VW ]

P2 Codes
Trouble Code	Fault Location	Probable Cause
P2000 – P2099 (Fuel and air metering and auxiliary emission control)
P2000	Nitrogen oxides (NOx) trap, bank 1 - efficiency below threshold	NOx trap
P2001	Nitrogen oxides (NOx) trap, bank 2 - efficiency below threshold	NOx trap
P2002	Particulate trap, bank 1 - efficiency below threshold	Particulate trap
P2003	Particulate trap, bank 2 - efficiency below threshold	Particulate trap
P2004	Intake manifold air control actuator / solenoid, bank 1 - actuator / solenoid stuck open	Wiring, intake manifold air control actuator / solenoid, mechanical fault
P2005	Intake manifold air control actuator / solenoid, bank 2 - actuator / solenoid stuck open	Wiring, intake manifold air control actuator / solenoid, mechanical fault
P2006	Intake manifold air control actuator / solenoid, bank 1 - actuator / solenoid stuck closed	Wiring, intake manifold air control actuator / solenoid, mechanical fault
P2007	Intake manifold air control actuator / solenoid, bank 2 - actuator / solenoid stuck closed	Wiring, intake manifold air control actuator / solenoid, mechanical fault
P2008	Intake manifold air control actuator / solenoid, bank 1 -open circuit	Wiring open circuit, intake manifold air control actuator / solenoid
P2009	Intake manifold air control actuator / solenoid, bank 1 -circuit low	Wiring short to ground, intake manifold air control actuator / solenoid
P200A	Intake manifold air control actuator / solenoid, bank 1 - performance problem	Wiring, intake manifold air control actuator / solenoid, ECM
P200B	Intake manifold air control actuator / solenoid, bank 2 - performance problem	Wiring, intake manifold air control actuator / solenoid, ECM
P200C	Diesel particulate filter (DPF), bank 1 - over-temperature condition	-
P200D	Diesel particulate filter (DPF), bank 2 - over-temperature condition	-
P200E	Catalytic converter, bank 1 - over-temperature condition	-
P200F	Catalytic converter, bank 2 - over-temperature condition	-
P2010	Intake manifold air control actuator / solenoid, bank 1 -circuit high	Wiring short to positive, intake manifold air control actuator / solenoid
P2011	Intake manifold air control actuator / solenoid, bank 2 - open circuit	Wiring open circuit, intake manifold air control actuator / solenoid
P2012	Intake manifold air control actuator / solenoid, bank 2- circuit low	Wiring short to ground, intake manifold air control actuator / solenoid
P2013	Intake manifold air control actuator / solenoid, bank 2- circuit high	Wiring short to positive, intake manifold air control actuator / solenoid
P2014	Intake manifold air control actuator position sensor/switch, bank 1 - circuit malfunction	Wiring, intake manifold air control actuator position sensor/switch
P2015	Intake manifold air control actuator position sensor/switch, bank 1 - range/performance problem	Wiring, mechanical fault, intake manifold air control actuator position sensor/switch
P2016	Intake manifold air control actuator position sensor/switch, bank 1 - circuit low	Wiring short to ground, intake manifold air control actuator position sensor/switch
P2017	Intake manifold air control actuator position sensor/switch, bank 1 - circuit high	Wiring short to positive, intake manifold air control actuator position sensor/switch
P2018	Intake manifold air control actuator position sensor/switch, bank 1 - circuit intermittent	Wiring, poor connection, intake manifold air control actuator position sensor/switch
P2019	Intake manifold air control actuator position sensor/switch, bank 2 - circuit malfunction	Wiring, intake manifold air control actuator position sensor/switch
P201A	Reductant injector - circuit range/performance Bank 2 Unit 1	Wiring, reductant injector, ECM
P201B	ISO/SAE Reserved	-
P201C	ISO/SAE Reserved	-
P201D	ISO/SAE Reserved	-
P201E	ISO/SAE Reserved	-
P201F	ISO/SAE Reserved	-
P2020	Intake manifold air control actuator position sensor/switch, bank 2 - range/performance problem	Wiring, mechanical fault, intake manifold air control actuator position sensor/switch
P2021	Intake manifold air control actuator position sensor/switch, bank 2 - circuit low	Wiring short to ground, intake manifold air control actuator position sensor/switch
P2022	Intake manifold air control actuator position sensor/switch, bank 2 - circuit high	Wiring short to positive, intake manifold air control actuator position sensor/switch
P2023	Intake manifold air control actuator position sensor/switch, bank 2 - circuit intermittent	Wiring, poor connection, intake manifold air control actuator position sensor/switch
P2024	Evaporative emission (EVAP) fuel vapour temperature sensor - circuit malfunction	Wiring, EVAP fuel vapour temperature sensor
P2025	Evaporative emission (EVAP) fuel vapour temperature sensor - range/performance problem	Wiring, EVAP fuel vapour temperature sensor
P2026	Evaporative emission (EVAP) fuel vapour temperature sensor - low voltage	Wiring short to ground, EVAP fuel vapour temperature sensor
P2027	Evaporative emission (EVAP) fuel vapour temperature sensor - high voltage	Wiring short to positive, EVAP fuel vapour temperature sensor
P2028	Evaporative emission (EVAP).fuel vapour temperature sensor - circuit intermittent	Wiring, poor connection, EVAP fuel vapour temperature sensor
P2029	Auxiliary heater (fuel fired) - system disabled	Auxiliary heater system
P202A	Reductant tank heater control - open circuit	Wiring, reductant tank heater, ECM
P202B	Reductant tank heater control - circuit low	Wiring, reductant tank heater, ECM
P202C	Reductant tank heater control - circuit high	Wiring, reductant tank heater, ECM
P202D	Reductant leakage	-
P202E	Reductant injector - circuit range/performance bank 1 unit 1	Wiring, reductant injector, ECM
P202F	Reductant supply control - circuit range/performance	-
P2030	Auxiliary he·ater (fuel fired) - performance problem	Auxiliary heater system
P2031	Exhaust gas temperature (EGT) sensor 2, bank 1 - circuit malfunction	Wiring, EGT sensor
P2032	Exhaust gas temperature (EGT) sensor 2, bank 1 - circuit low	Wiring short to ground, EGT sensor
P2033	Exhaust gas temperature (EGT) sensor 2, bank 1 - circuit high	Wiring short to positive, EGT sensor
P2034	Exhaust gas temperature (EGT) sensor 2, bank 2 - circuit malfunction	Wiring, EGT sensor
P2035	Exhaust gas temperature (EGT) sensor 2, bank 2 - circuit low	Wiring short to ground, EGT sensor
P2036	Exhaust gas temperature (EGT) sensor 2, bank 2 - circuit high	Wiring short to positive, EGT sensor
P2037	Reductant injection air pressure sensor- circuit malfunction	Wiring, reductant injection air pressure sensor
P2038	Reductant injection air pressure sensor- range/performance problem	Wiring, reductant injection air pressure sensor
P2039	Reductant injection air pressure sensor- low input	Wiring short to ground, reductant injection air pressure sensor
P203A	Reductant level sensor - circuit malfunction	Wiring, reductant level sensor, ECM
P203B	Reductant level sensor - circuit range/performance	Wiring, reductant level sensor, ECM
P203C	Reductant level sensor - circuit low	Wiring, reductant level sensor, ECM
P203D	Reductant level sensor - circuit high	Wiring, reductant level sensor, ECM
P203E	Reductant level sensor - circuit intermittent/erratic	Wiring, reductant level sensor, ECM
P203F	Reductant level - low	-
P2040	Reductant injection air pressure sensor - high input	Wiring short to positive, reductant injection air pressure sensor
P2041	Reductant injection air pressure sensor - circuit intermittent	Wiring, reductant injection air pressure sensor
P2042	Reductant temperature sensor - circuit malfunction	Wiring, reductant temperature sensor
P2043	Reductant temperature sensor - range/performance problem	Wiring, reductant temperature sensor
P2044	Reductant temperature sensor - low input	Wiring, reductant temperature sensor
P2045	Reductant temperature sensor - high input	Wiring, reductant temperature sensor
P2046	Reductant temperature sensor- circuit intermittent	Wiring, reductant temperature sensor
P2047	Reductant injector 1, bank 1 - open circuit	Wiring, reductant injector
P2048	Reductant injector 1, bank 1 - circuit low	Wiring short to ground, reductant injector
P2049	Reductant injector 1, bank 1 - circuit high	Wiring short to positive, reductant injector
P204A	Reductant pressure sensor - circuit malfunction	Wiring, reductant pressure sensor, ECM
P204B	Reductant pressure sensor - circuit range/performance	Wiring, reductant pressure sensor, ECM
P204C	Reductant pressure sensor - circuit low	Wiring, reductant pressure sensor, ECM
P204D	Reductant pressure sensor - circuit high	Wiring, reductant pressure sensor, ECM
P204E	Reductant pressure sensor - circuit intermittent/erratic	Wiring, reductant pressure sensor, ECM
P204F	Reductant system, bank 1 - performance problem	-
P2050	Reductant injector 1, bank 2 - open circuit	Wiring, reductant injector
P2051	Reductant injector 1, bank 2 - circuit low	Wiring short to ground, reductant injector
P2052	Reductant injector 1, bank 2 - circuit high	Wiring short to positive, reductant injector
P2053	Reductant injector 2, bank 1 - open circuit	Wiring, reductant injector
P2054	Reductant injector 2, bank 1 - circuit low	Wiring short to ground, reductant injector
P2055	Reductant injector 2, bank 1 - circuit high	Wiring short to positive, reductant injector
P2056	Reductant injector 2, bank 2 - open circuit	Wiring, reductant injector
P2057	Reductant injector 2, bank 2 - circuit low	Wiring short to ground, reductant injector
P2058	Reductant injector 2, bank 2 - circuit high	Wiring short to positive, reductant injector
P2059	Reductant injection air pump - open circuit	Wiring, reductant injection air pump
P205A	Reductant temperature sensor - circuit malfunction	Wiring, reductant tank temperature sensor, ECM
P205B	Reductant temperature sensor - circuit range/performance	Wiring, reductant tank temperature sensor, ECM
P205C	Reductant temperature sensor - circuit low	Wiring, reductant tank temperature sensor, ECM
P205D	Reductant temperature sensor - circuit high	Wiring, reductant tank temperature sensor, ECM
P205E	Reductant temperature sensor - circuit intermittent/erratic	Wiring, reductant tank temperature sensor, ECM
P205F	Reductant system, bank 2 - performance problem	-
P2060	Reductant injection air pump - circuit low	Wiring short to ground, reductant injection air pump
P2061	Reductant injection air pump - circuit high	Wiring short to positive, reductant injection air pump
P2062	Reductant supply control - open circuit	Wiring
P2063	Reductant supply control - circuit low	Wiring
P2064	Reductant supply control - circuit high	Wiring
P2065	Fuel gauge tank sensor B - circuit malfunction	Wiring, fuel gauge tank sensor
P2066	Fuel gauge tank sensor B - performance problem	Wiring, fuel gauge tank sensor
P2067	Fuel gauge tank sensor B - circuit low	Wiring short to ground, fuel gauge tank sensor
P2068	Fuel gauge tank sensor B - circuit high	Wiring short to positive, fuel gauge tank sensor
P2069	Fuel gauge tank sensor B - circuit intermittent	Wiring, poor connection, fuel gauge tank sensor
P206A	Reductant quality sensor - malfunction	Wiring, reductant quality sensor, ECM
P206B	Reductant quality sensor - range/performance problem	Wiring, reductant quality sensor, ECM
P206C	Reductant quality sensor - circuit low	Wiring, reductant quality sensor, ECM
P206D	Reductant quality sensor - circuit high	Wiring, reductant quality sensor, ECM
P206E	Intake manifold air control actuator, bank 2 - actuator stuck open	Wiring, intake manifold air control actuator, ECM
P206F	Intake manifold air control actuator, bank 2 - actuator stuck closed	Wiring, intake manifold air control actuator, ECM
P2070	Intake manifold air control actuator/solenoid- actuator/solenoid stuck open	Wiring, intake manifold air control actuator/solenoid, mechanical fault
P2071	Intake manifold air control actuator/solenoid - actuator/solenoid stuck closed	Wiring, intake manifold air control actuator/solenoid, mechanical fault
P2074	Manifold absolute pressure (MAP) sensor/throttle position switch (TPS) - high air flow/vacuum leak	Vacuum leak, wiring, MAP, TPS, ECM
P2075	Intake manifold air control actuator position sensor/switch - circuit malfunction	Wiring, intake manifold air control actuator position sensor/switch
P2076	Intake manifold air control actuator position sensor/switch - range/performance problem	Wiring, intake manifold air control actuator position sensor/switch
P2077	Intake manifold air control actuator position sensor/switch - circuit low	Wiring short to ground, intake manifold air control actuator position sensor/switch
P2078	Intake manifold air control actuator position sensor/switch - circuit high	Wiring short to positive, intake manifold air control actuator position sensor/switch
P2079	Intake manifold air control actuator position sensor/switch - circuit intermittent	Wiring, poor connection, intake manifold air control actuator position sensor/switch
P207A	Intake manifold air control actuator position sensor/switch, bank 2 - circuit malfunction	Wiring, intake manifold air control actuator position sensor, ECM
P207B	Intake manifold air control actuator position sensor/switch, bank 2 - circuit range/performance	Wiring, intake manifold air control actuator position sensor, ECM
P207C	Intake manifold air control actuator position sensor/switch, bank 2 - circuit low	Wiring, intake manifold air control actuator position sensor, ECM
P207D	Intake manifold air control actuator position sensor/switch, bank 2 - circuit high	Wiring, intake manifold air control actuator position sensor, ECM
P207E	Intake manifold air control actuator position sensor/switch, bank 2 - circuit intermittent	Wiring, intake manifold air control actuator position sensor, ECM
P207F	Reductant quality - performance problem	-
P2080	Exhaust gas temperature (EGT) sensor 1, bank 1 - range/performance problem	Wiring, EGT sensor
P2081	Exhaust gas temperature (EGT) sensor 1, bank 1 - circuit intermittent	Wiring, poor connection, EGT sensor
P2082	Exhaust gas temperature (EGT) sensor 1, bank 2 - range/performance problem	Wiring, EGT sensor
P2083	Exhaust gas temperature (EGT) sensor 1, bank 2 - circuit intermittent	Wiring, poor connection, EGT sensor
P2084	Exhaust gas temperature (EGT) sensor 2, bank 1 - range/performance problem	Wiring, EGT sensor
P2085	Exhaust gas temperature (EGT) sensor 2, bank 1 - circuit intermittent	Wiring, poor connection, EGT sensor
P2086	Exhaust gas temperature (EGT) sensor 2, bank 2 - range/performance problem	Wiring, EGT sensor
P2087	Exhaust gas temperature (EGT) sensor 2, bank 2 - circuit intermittent	Wiring, poor connection, EGT sensor
P2088	Camshaft position (CMP) actuator A, bank 1 - circuit low	Wiring short to ground, CMP actuator
P2089	Camshaft position (CMP) actuator A, bank 1 - circuit high	Wiring short to positive, CMP actuator
P208A	Reductant pump control - open circuit	Wiring, reductant pump, ECM
P208B	Reductant pump control - range/performance problem	Wiring, reductant pump, ECM
P208C	Reductant pump control - circuit low	Wiring, reductant pump, ECM
P208D	Reductant pump control - circuit high	Wiring, reductant pump, ECM
P208E	Reductant injector 1, bank 1 - stuck closed	Reductant injector
P208F	Reductant injector 1, bank 2 - stuck closed	Wiring, reductant injector, ECM
P2090	Camshaft position (CMP) actuator B, bank 1 - circuit low	Wiring short to ground, CMP actuator
P2091	Camshaft position (CMP) actuator B, bank 1 - circuit high	Wiring short to positive, CMP actuator
P2092	Camshaft position (CMP) actuator A, bank 2 - circuit low	Wiring short to ground, CMP actuator
P2093	Camshaft position (CMP) actuator A, bank 2 - circuit high	Wiring short to positive, CMP actuator
P2094	Camshaft position (CMP) actuator B, bank 2 - circuit low	Wiring short to ground, CMP actuator
P2095	Camshaft position (CMP) actuator B, bank 2 - circuit high	Wiring short to positive, CMP actuator
P2096	Post catalytic converter fuel trim (FT), bank 1 -too lean	Catalytic converter, exhaust leak
P2097	Post catalytic converter fuel trim (FT), bank 1 - too rich	Catalytic converter
P2098	Post catalytic converter fuel trim (FT), bank 2- too lean	Catalytic converter, exhaust leak
P2099	Post catalytic converter fuel trim (FT), bank 2 -too rich	Catalytic converter
P209A	Reductant injection air pressure sensor B - circuit malfunction	Wiring, reductant injection air pressure sensor, ECM
P209B	Reductant injection air pressure sensor B - circuit range/performance	Wiring, reductant injection air pressure sensor, ECM
P209C	Reductant injection air pressure sensor B - circuit low	Wiring, reductant injection air pressure sensor, ECM
P209D	Reductant injection air pressure sensor B - circuit high	Wiring, reductant injection air pressure sensor, ECM
P209E	Reductant injection air pressure sensor NB - correlation	Wiring, reductant injection air pressure sensor, ECM
P209F	Reductant tank heater control - performance problem	Wiring, reductant tank heater, ECM
P20A0	Reductant purge control valve - open circuit	Wiring, reductant purge control valve, ECM
P20A1	Reductant purge control valve - performance problem	Wiring, reductant purge control valve, ECM
P20A2	Reductant purge control valve - circuit low	Wiring, reductant purge control valve, ECM
P20A3	Reductant purge control valve - circuit high	Wiring, reductant purge control valve, ECM
P20A4	Reductant purge control valve - valve stuck open	Wiring, reductant purge control valve, ECM
P20A5	Reductant purge control valve - valve stuck closed	Wiring, reductant purge control valve, ECM
P20A6	Reductant injection air pressure control valve - open circuit	Wiring, reductant injection air pressure control valve, ECM
P20A7	Reductant injection air pressure control valve - performance problem	Wiring, reductant injection air pressure control valve, ECM
P20A8	Reductant injection air pressure control valve - circuit low	Wiring, reductant injection air pressure control valve, ECM
P20A9	Reductant injection air pressure control valve - circuit high	Wiring, reductant injection air pressure control valve, ECM
P20AA	Reductant injection air pressure control valve - valve stuck open	Wiring, reductant injection air pressure control valve, ECM
P20AB	Reductant injection air pressure control valve - valve stuck closed	Wiring, reductant injection air pressure control valve, ECM
P20AC	Reductant metering unit temperature sensor- circuit malfunction	Wiring, reductant metering unit temperature sensor, ECM
P20AD	Reductant metering unit temperature sensor - circuit range/performance	Wiring, reductant metering unit temperature sensor, ECM
P20AE	Reductant metering unit temperature sensor - circuit low	Wiring, reductant metering unit temperature sensor, ECM
P20AF	Reductant metering unit temperature sensor - circuit high	Wiring, reductant metering unit temperature sensor, ECM
P20B0	Reductant metering unit temperature sensor - circuit intermittenUerratic	Wiring, reductant metering unit temperature sensor, ECM
P20B1	Reductant heater coolant control valve - open circuit	Wiring, reductant heater coolant control valve, ECM
P20B2	Reductant heater coolant control valve - performance problem	Wiring, reductant heater coolant control valve, ECM
P20B3	Reductant heater coolant control valve- circuit low	Wiring, reductant heater coolant control valve, ECM
P20B4	Reductant heater coolant control valve - circuit high	Wiring, reductant heater coolant control valve, ECM
P20B5	Reductant metering unit heater control - open	Circuit wiring, reductant heater, ECM
P20B6	Reductant metering unit heater- control performance problem	Wiring, reductant metering unit heater, ECM
P20B7	Reductant metering unit heater- control circuit low	Wiring, reductant metering unit heater, ECM
P20B8	Reductant metering unit heater control - circuit high	Wiring, reductant metering unit heater, ECM
P20B9	Reductant heater control A - open circuit	Wiring, reductant heater, ECM
P20BA	Reductant heater control A - circuit performance problem	Wiring, reductant heater, ECM
P20BB	Reductant heater control A - circuit low	Wiring, reductant heater, ECM
P20BC	Reductant heater control A - circuit high	Wiring, reductant heater, ECM
P20BD	Reductant heater control B - circuit open	Wiring, reductant heater, ECM
P20BE	Reductant heater control B - performance problem	Wiring, reductant heater, ECM
P20BF	Reductant heater control B - circuit low	Wiring, reductant heater, ECM
P20C0	Reductant heater control B - circuit high	Wiring, reductant heater, ECM
P20C1	Reductant heater control C - open circuit	Wiring, reductant heater, ECM
P20C2	Reductant heater control C- performance problem	Wiring, reductant heater, ECM
P20C3	Reductant heater control C - circuit low	Wiring, reductant heater, ECM
P20C4	Reductant heater control C - circuit high	Wiring, reductant heater, ECM
P20C5	Reductant heater control D - open circuit	Wiring, reductant heater, ECM
P20C6	Reductant heater control 0- performance problem	Wiring, reductant heater, ECM
P20C7	Reductant heater control 0 - circuit low	Wiring, reductant heater, ECM
P20C8	Reductant heater control 0 - circuit high	Wiring, reductant heater, ECM
P20C9	Reductant control module - MIL activation requested	-
P20CA	Reductant injection air pressure - leak	-
P20CB	Exhaust after treatment fuel injector A - control circuit open	Wiring, exhaust after treatment fuel injector, ECM
P20CC	Exhaust after treatment fuel injector A - performance problem	Wiring, exhaust after treatment fuel injector, ECM
P20CD	Exhaust after treatment fuel injector A - control circuit low	Wiring, fuel injector, ECM
P20CE	Exhaust after treatment fuel injector A - control circuit high	Wiring, fuel injector, ECM
P20CF	Exhaust after treatment fuel injector A - stuck open	Wiring, exhaust after treatment fuel injector, ECM
P20D0	Exhaust after treatment fuel injector A - stuck closed	Wiring, exhaust after treatment fuel injector, ECM
P20D1	Exhaust after treatment fuel injector B - control circuit open	Wiring, exhaust after treatment fuel injector, ECM
P20D3	Exhaust after treatment fuel injector B - control circuit low	Wiring, exhaust after treatment fuel injector, ECM
P20D4	Exhaust after treatment fuel injector B - control circuit high ·	Wiring, exhaust after treatment fuel injector, ECM
P20D6	Exhaust after treatment fuel injector B - stuck closed	Wiring, exhaust after treatment fuel injector, ECM
P20D7	Exhaust after treatment fuel supply control - open circuit	-
P20D8	Exhaust after treatment fuel supply control - performance problem	-
P20D9	Exhaust after treatment fuel supply- control circuit low	-
P20DA	Exhaust after treatment fuel supply - control circuit high	-
P20DB	Exhaust after treatment fuel supply - control stuck open	-
P20DC	Exhaust after treatment fuel supply control - valve stuck closed	-
P20DD	Exhaust after treatment fuel pressure sensor - circuit malfunction	Wiring, exhaust after treatment fuel pressure sensor, ECM
P20DE	Exhaust after treatment fuel pressure sensor - circuit range/performance	Wiring, exhaust after treatment fuel pressure sensor, ECM
P20DF	Exhaust after treatment fuel pressure sensor - circuit low	Wiring, exhaust after treatment fuel pressure sensor, ECM
P20E0	Exhaust after treatment fuel pressure sensor - circuit high	Wiring, exhaust after treatment fuel pressure sensor, ECM
P20E1	Exhaust after treatment fuel pressure sensor - circuit intermittent/erratic	Wiring, exhaust after treatment fuel pressure sensor, ECM
P20E2	Exhaust gas temperature sensor 1/2, bank 1 - correlation	Wiring, exhaust gas temperature sensor, ECM
P20E3	Exhaust gas temperature sensor 1/3, bank 1 - correlation	Wiring, exhaust gas temperature sensor, ECM
P20E4	Exhaust gas temperature sensor 2/3, bank 1 - correlation	Wiring, exhaust gas temperature sensor, ECM
P20E5	Exhaust gas temperature sensor 1/2, bank 2- correlation	Wiring, exhaust gas temperature sensor, ECM
P20E6	Reductant Injection Air Pressure Too Low	-
P20E7	Reductant Injection Air Pressure Too High	-
P20E8	Reductant Pressure Too Low	Injection pump, DEF contamination, Low reductant fluid, Heater element, Leaks, Wiring, PCM
P20E9	Reductant Pressure Too High	-
P20EA	Reductant Control Module Power Relay De-Energized Performance - Too Early	-
P20EB	Reductant Control Module Power Relay De-Energized Performance - Too Late	-
P20EC	SCR NOx Catalyst - Over Temperature Bank 1	-
P20ED	SCR NOx Pre-Catalyst - Over Temperature Bank 1	-
P20EE	SCR NOx Catalyst Efficiency Below Threshold Bank 1	-
P20EF	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 1	-
P20F0	SCR NOx Catalyst - Over Temperature Bank 2	-
P20F1	SCR NOx Pre-Catalyst - Over Temperature Bank 2	-
P20F2	SCR NOx Catalyst Efficiency Below Threshold Bank 2	-
P20F3	SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2	-
P20F4	Reductant Consumption Too Low	-
P20F5	Reductant Consumption Too High	-
P20F6	Reductant Injection Valve Stuck Open Bank 1 Unit 1	-
P20F7	Reductant Injection Valve Stuck Open Bank 2 Unit 1	-
P20F8 – P20FF	ISO/SAE Reserved	-
P2100 – P2199 (Fuel and air metering)
P2100	Throttle actuator control (TAC) motor - open circuit	Wiring, TAC motor
P2101	Throttle actuator control (TAC) motor - range/performance problem	Wiring, TAC motor
P2102	Throttle actuator control (TAC) motor - circuit low	Wiring short to ground, TAC motor
P2103	Throttle actuator control (TAC) motor - circuit high	Wiring short to positive, TAC motor
P2104	Throttle actuator control (TAC) system- forced idle mode	Wiring, TAC motor, APP sensor, ECM
P2105	Throttle actuator control (TAC) system - forced engine shut down mode	Wiring, TAC motor, APP sensor, ECM
P2106	Throttle actuator control (TAC) system - forced limited power mode	Wiring, TAC motor, APP sensor, ECM
P2107	Throttle actuator control (TAC) module- processor fault	TAC control module
P2108	Throttle actuator control (TAC) module - performance problem	TAC control module
P2109	Accelerator pedal position (APP) / Throttle position (TP) sensor A - minimum stop performance	APP sensor / TP sensor, throttle valve tight/sticking
P210A	Throttle control unit B, control motor - open circuit / Heated oxygen sensor (H02S) 1, bank 1 - implausible signal	Wiring, throttle control unit, ECM / Wiring, short to positive, short to ground, H025, ECM
P210B	Throttle control unit B, control motor- circuit range/performance	Wiring, throttle control unit, ECM
P210C	Throttle control unit B, control motor - circuit low	Wiring, throttle control unit, ECM
P210D	Throttle control unit B, control motor - circuit high	Wiring, throttle control unit, ECM
P210E	Throttle position sensor (TPS)/accelerator pedal position (APP) sensor/switch C/F voltage - correlation	Wiring, TPS, APP sensor/switch, ECM
P210F	Heated oxygen sensor (H02S) 1, bank 1 - implausible signal	Wiring, short to positive, short to ground, H02S, ECM
P2110	Throttle actuator control (TAC) system - forced limited rpm mode / Heated oxygen sensor (H02S) 1, bank 1 - implausible signal	Wiring, TAC motor, APP sensor, ECM / Wiring, short to positive, short to ground, H025, ECM
P2111	Throttle actuator control (TAC) system- actuator stuck open	Throttle body, throttle valve tight/sticking
P2112	Throttle actuator control (TAC) system - actuator stuck closed / - circuit malfunction	Throttle body, throttle valve tight/sticking / Wiring, short to positive, short to ground, TP sensor, ECM
P2113	Accelerator pedal position (APP) / Throttle position (TP) sensor B - minimum stop performance	APP sensor / TP sensor, throttle valve tight/sticking
P2114	Accelerator pedal position (APP) / Throttle position (TP) sensor C - minimum stop performance	APP sensor / TP sensor, throttle valve tight/sticking
P2115	Accelerator pedal position (APP) / Throttle position (TP) sensor D - minimum stop performance	APP sensor / TP sensor, throttle valve tight/sticking
P2116	Accelerator pedal position (APP) / Throttle position (TP) sensor E - minimum stop performance	Wiring, TP sensor / Wiring, TP sensor
P2117	Accelerator pedal position (APP) sensor F / Throttle position (TP) - minimum stop performance	Wiring, APP sensor / Wiring, TP sensor
P2118	Throttle actuator control (TAC), throttle motor current - range/performance problem	Wiring, throttle motor
P2119	Throttle actuator control (TAC), throttle valve - range/performance problem	Throttle valve tight/sticking, throttle motor
P211A	ISO/SAE Reserved	-
P211B	ISO/SAE Reserved	-
P211C	ISO/SAE Reserved	-
P211D	ISO/SAE Reserved	-
P211E	ISO/SAE Reserved	-
P211F	ISO/SAE Reserved	-
P2120	Accelerator pedal position (APP) / Throttle position (TP) sensor/ switch D - circuit malfunction / Heated oxygen sensor (H02S) 1, bank 1 - implausible signal	Wiring, APP / TP sensor/switch / Wiring, short to positive, short to ground, H02S, ECM
P2121	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch D - range/performance problem	Wiring, APP / TP sensor/switch
P2122	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch D - low input	Wiring short to ground, APP / TP sensor/switch
P2123	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch D - high input	Wiring short to positive, APP / TP sensor/switch
P2124	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch D - circuit intermittent	Wiring, poor connection, APP / TP sensor/switch
P2125	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch E - circuit malfunction	Wiring, APP / TP sensor/switch
P2126	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch E - range/performance problem	Wiring, APP / TP sensor/switch
P2127	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch E - low input	Wiring short to ground, APP / TP sensor/switch
P2128	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch E - high input	Wiring short to positive, APP / TP sensor/switch
P2129	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch E - circuit intermittent	Wiring, poor connection, APP / TP sensor/switch
P212A	Throttle Position Sensor/Switch "G" Circuit	-
P212B	Throttle Position Sensor/Switch "G" Circuit Range/Performance	-
P212C	Throttle Position Sensor/Switch "G" Circuit Low	-
P212D	Throttle Position Sensor/Switch "G" Circuit High	-
P212E	Throttle Position Sensor/Switch "G" Circuit Intermittent	-
P212F	ISO/SAE Reserved	-
P2130	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch F- circuit malfunction	Wiring, APP / TP sensor/switch
P2131	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch F- circuit range/performance problem	Wiring, APP / TP sensor/switch
P2132	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch F- low input	Wiring short to ground, APP / TP sensor/switch
P2133	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch F - high input	Wiring short to positive, APP / TP sensor/switch
P2134	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch F- circuit intermittent	Wiring, poor connection, APP / TP sensor/switch
P2135	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch A/B - voltage correlation	Wiring, APP / TP sensor/switch / Wiring, TP sensor/switch
P2136	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch A/C - voltage correlation	Wiring, APP / TP sensor/switch
P2137	Accelerator pedal position (APP) sensor/switch B/C / Throttle position (TP) sensor/switch D/E - voltage correlation	Wiring, APP sensor/switch / Wiring, TP sensor/switch
P2138	Throttle position (TP) sensor/switch D/E - voltage correlation	Wiring, TP sensor/switch
P2139	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch D/F - voltage correlation	Wiring, APP / TP sensor/switch
P213A	Exhaust gas recirculation (EGR) throttle B - open circuit	Wiring, EGR throttle, ECM
P213B	Exhaust gas recirculation (EGR) throttle B - control circuit range/performance	Wiring, EGR throttle, ECM
P213C	Exhaust gas recirculation (EGR) throttle B - control circuit low	Wiring, EGR throttle, ECM
P213D	Exhaust gas recirculation (EGR) throttle B - control circuit high	Wiring, EGR throttle, ECM
P213E	Fuel injection system fault- forced engine shut-down mode	-
P213F	Fuel pump (FP) system fault - forced engine shut-down mode	Wiring, FP, FP relay, ECM
P2140	Accelerator pedal position (APP) / Throttle position (TP) sensor/switch E/F - voltage correlation / Long term fuel trim (LTFT), bank 1 -range/performance problem	Wiring, APP / TP sensor/switch / Catalytic converter, exhaust leak, injector leakage, H025
P2141	Exhaust gas recirculation (EGR) throttle control valve - circuit low	Wiring short to ground, EGR throttle control valve
P2142	Exhaust gas recirculation (EGR) throttle control valve - circuit high	Wiring short to positive, EGR throttle control valve
P2143	Exhaust gas recirculation (EGR) vent control - open circuit	Wiring, EGR vent control
P2144	Exhaust gas recirculation (EGR) vent control - circuit low	Wiring short to ground, EGR vent control
P2145	Exhaust gas recirculation (EGR) vent control - circuit high	Wiring short to positive, EGR vent control
P2146	Injector- group A, supply voltage - open circuit	Wiring, engine control (EC) relay, injector
P2147	Injector - group A, supply voltage - circuit low	Wiring short to ground, engine control (EC) relay, injector
P2148	Injector - group A, supply voltage - circuit high	Wiring short to positive, engine control (EC) relay, injector
P2149	Injector - group B, supply voltage - open circuit	Wiring, engine control (EC) relay, Injector
P214A	ISO/SAE Reserved	-
P214B	ISO/SAE Reserved	-
P214C	Long term fuel trim (LTFT), bank 1 - range/performance problem	Catalytic converter, exhaust leak, Injector leakage, H02S
P214D	Long term fuel trim (LTFT), bank 1 -range/performance problem	Catalytic converter, exhaust leak, injector leakage, H02S
P214E	ISO/SAE Reserved	-
P214F	ISO/SAE Reserved	-
P2150	Injector- group B, supply voltage- circuit low	Wiring short to ground, engine control (EC) relay, injector
P2151	Injector - group B, supply voltage -circuit high	Wiring short to positive, engine control (EC) relay, injector
P2152	Injector - group C, supply voltage - open circuit	Wiring, engine control (EC) relay, injector
P2153	Injector - group C, supply voltage - circuit low	Wiring short to ground, engine control (EC) relay, injector
P2154	Injector - group C, supply voltage - circuit high	Wiring short to positive, engine control (EC) relay, injector
P2155	Injector- group D, supply voltage - open circuit	Wiring, engine control (EC) relay, injector
P2156	Injector- group D, supply voltage- circuit low	Wiring short to ground, engine control (EC) relay, injector
P2157	Injector- group D, supply voltage - circuit high	Wiring short to positive, engine control (EC) relay, injector
P2158	Vehicle speed sensor (VSS) B- circuit malfunction	Wiring, VSS
P2159	Vehicle speed sensor (VSS) B - range/performance problem	Wiring, VSS
P215A	Vehicle speed sensor (VSS)/wheel speed - correlation	Wiring, VSS, wheel speed sensor, incorrect tyre size, ECM
P215B	Vehicle speed sensor (VSS)/transmission output shaft speed (OSS) sensor - correlation	Wiring, VSS, OSS sensor, transmission mechanical fault, incorrect tyre size, ECM
P215C	Output Shaft Speed - Wheel Speed Correlation	-
P215D	ISO/SAE Reserved	-
P215E	ISO/SAE Reserved	-
P215F	ISO/SAE Reserved	-
P2160	Vehicle speed sensor (VSS) B -circuit low	Wiring short to ground, VSS
P2161	Vehicle speed sensor (VSS) B -circuit intermittent/erratic	Wiring, poor connection, VSS
P2162	Vehicle speed sensor (VSS) AlB -correlation	Wiring, VSS, incorrect tire size
P2163	Accelerator pedal position (APP) / Throttle position (TP) sensor A - maximum stop performance	Wiring, APP sensor / Wiring, TP sensor
P2164	Accelerator pedal position (APP) / Throttle position (TP) sensor B - maximum stop performance	Wiring, APP sensor / Wiring, TP sensor
P2165	Accelerator pedal position (APP) / Throttle position (TP) sensor C - maximum stop performance	Wiring, APP sensor / Wiring, TP sensor
P2166	Accelerator pedal position (APP) / Throttle position (TP) sensor D - maximum stop performance	Wiring, APP sensor / Wiring, TP sensor
P2167	Accelerator pedal position (APP) / Throttle position (TP) sensor E - maximum stop performance	Wiring, APP sensor / Wiring, TP sensor
P2168	Accelerator pedal position (APP) / Throttle position (TP) sensor F - maximum stop performance	Wiring, APP sensor / Wiring, TP sensor
P2169	Exhaust gas pressure regulator vent solenoid - circuit open	Wiring, exhaust gas pressure regulator vent solenoid
P216A	Fuel injector group E, supply voltage - open circuit	Wiring, engine control (EC) relay, injectors, ECM
P216B	Fuel injector group E, supply voltage - circuit low	Wiring, engine control (EC) relay, injectors, ECM
P216C	Fuel injector group E, supply voltage - circuit high	Wiring, engine control (EC) relay, injectors, ECM
P216D	Fuel injector group F, supply voltage - open circuit	Wiring, engine control (EC) relay, injectors, ECM
P216E	Fuel injector group F, supply voltage - circuit low	Wiring, engine control (EC) relay, injectors, ECM
P216F	Fuel injector group F, supply voltage - circuit high Wiring,	Wiring, engine control (EC) relay, injectors, ECM
P2170	Exhaust gas pressure regulator vent solenoid - circuit low	Wiring short to ground, exhaust gas pressure regulator vent solenoid
P2171	Exhaust gas pressure regulator vent solenoid - circuit high	Wiring short to positive, exhaust gas pressure regulator vent solenoid
P2172	Throttle actuator control (TAG) system - sudden high airflow detected	Intake system, throttle body
P2173	Throttle actuator control (TAG) system - high airflow detected	Intake system, throttle body
P2174	Throttle actuator control (TAC) system - sudden low airflow detected	Intake system, throttle body
P2175	Throttle actuator control (TAG) system - low airflow detected	Intake system, throttle body
P2176	Throttle actuator control (TAG) system - idle position not learned	Basic setting not carried out
P2177	System too lean off idle, bank 1	Fuel pressure, injectors, intake leak
P2178	System too rich off idle, bank 1	Fuel pressure, injectors, air intake restricted
P2179	System too lean off idle, bank 2 / Adaptive heated oxygen sensor (H02S) control, bank 2 - signal high	Fuel pressure, injectors, intake leak / Wiring, short to positive, H02S, ECM
P217A	Fuel Injector Group "G" Supply Voltage Circuit/Open	-
P217B	Fuel Injector Group "G" Supply Voltage Circuit Low	-
P217C	Fuel Injector Group "G" Supply Voltage Circuit High	-
P217D	Fuel Injector Group "H" Supply Voltage Circuit/Open	-
P217E	Fuel Injector Group "H" Supply Voltage Circuit Low	-
P217F	Fuel Injector Group "H" Supply Voltage Circuit High	-
P2180	System too rich off idle, bank 2 / Adaptive heated oxygen sensor (H02S) control, bank 2 - signal low	Fuel pressure, injectors, air intake restricted / Wiring, short to ground, H02S, ECM
P2181	Cooling system performance	Radiator, coolant thermostat, engine coolant blower motor, ECT sensor
P2182	Engine coolant temperature (ECT) sensor 2 - circuit malfunction	Wiring, ECT sensor
P2183	Engine coolant temperature (ECT) sensor 2 - range/performance problem	Wiring, ECT sensor
P2184	Engine coolant temperature (ECT) sensor 2 - circuit low	Wiring short to ground, ECT sensor
P2185	Engine coolant temperature (ECT) sensor 2 - circuit high	Wiring short to positive, ECT sensor
P2186	Engine coolant temperature (ECT) sensor 2 - circuit intermittent/erratic	Wiring, poor connection, ECT sensor
P2187	System too lean at idle, bank 1	Fuel pressure, injectors, intake leak
P2188	System too rich at idle, bank 1	Fuel pressure, injectors, air intake restricted
P2189	System too lean at idle, bank 2	Fuel pressure, injectors, intake leak
P218A	ISO/SAE Reserved	-
P218B	ISO/SAE Reserved	-
P218C	ISO/SAE Reserved	-
P218D	ISO/SAE Reserved	-
P218E	ISO/SAE Reserved	-
P218F	ISO/SAE Reserved	-
P2190	System too rich at idle, bank 2 / Adaptive heated oxygen sensor (H02S) control, bank 2 - signal low / - implausible signal	Fuel pressure, injectors, air intake restricted / Wiring, short to ground, H025, ECM / Wiring, short to positive, short to ground, H02S, ECM
P2191	System too lean at higher load, bank 1	Fuel pressure, injectors, intake leak
P2192	System too rich at higher load, bank 1	Fuel pressure, injectors, air intake restricted
P2193	System too lean at higher load, bank 2	Fuel pressure, injectors, intake leak
P2194	System too rich at higher load, bank 2	Fuel pressure, injectors, air intake restricted
P2195	Heated oxygen sensor (H02S) 1, bank 1 - signal stuck lean	H02S, fuel pressure, injectors, intake leak
P2196	Heated oxygen sensor (H02S) 1, bank 1 - signal stuck rich	H02S, fuel pressure, injectors, air intake restricted
P2197	Heated oxygen sensor (H02S) 1, bank 2- signal stuck lean / - implausible signal	H02S, fuel pressure, injectors, intake leak / Wiring, short to positive, short to ground, H02S, ECM
P2198	Heated oxygen sensor (H02S) 1, bank 2 - signal stuck rich	H02S, fuel pressure, injectors, air intake restricted
P2199	Intake air temperature (IAT) sensor 1/2- correlation	Wiring, IAT sensor
P219A	Bank 1 Air/Fuel Ratio Imbalance	-
P219B	Bank 2 Air/Fuel Ratio Imbalance
P21AC	Long term fuel trim (LTFT), under load, bank 1 - rich	Catalytic converter, injector leakage, H02S
P21AD	Long term fuel trim (LTFT), under load, bank 1 - lean	Catalytic converter, exhaust leak, H02S
P21CC	Long term fuel trim (LTFT), at idle, bank 1 - rich	Catalytic converter, injector leakage, H02S
P21CD	Long term fuel trim (LTFT), at idle, bank 1 -lean	Catalytic converter, exhaust leak, H02S
P21E0	Long term fuel trim (LTFT), bank 1 - implausible signal	Wiring, injector, H02S
P21EB	Long term fuel trim (LTFT), bank 1 -no signal	Wiring, injector, H02S
P21EC	Long term fuel trim (LTFT), bank 1 - signal high	Wiring, short to power, injector, H02S
P21ED	Long term fuel trim (LTFT), bank 1 -signal low	Wiring, short to ground, injector, H02S
P21EE – P21FF	ISO/SAE Reserved	-
P2200 – P2299 (Fuel and air metering – injector circuit)
P2200	Nitrogen oxides (NOx) sensor, bank 1 - circuit malfunction	Wiring, NOx sensor
P2201	Nitrogen oxides (NOx) sensor, bank 1 - range/performance problem	Wiring, NOx sensor
P2202	Nitrogen oxides (NOx) sensor, bank 1 - low input	Wiring short to ground, NOx sensor
P2203	Nitrogen oxides (NOx) sensor, bank 1 - high input	Wiring short to positive, NOx sensor
P2204	Nitrogen oxides (NOx) sensor, bank 1 - intermittent input	Wiring, poor connection, NOx sensor
P2205	Nitrogen oxides (NOx) sensor, bank 1, heater control - open circuit	Wiring, NOx sensor
P2206	Nitrogen oxides (NOx) sensor, bank 1, heater control - circuit low	Wiring short to ground, NOx sensor
P2207	Nitrogen oxides (NOx) sensor, bank 1, heater control - circuit high	Wiring short to positive, NOx sensor
P2208	Nitrogen oxides (NOx) sensor, bank 1, heater sense circuit - malfunction	Wiring, NOx sensor
P2209	Nitrogen oxides (NOx) sensor, bank 1, heater sense circuit - range/performance problem	Wiring, NOx sensor
P220A	ISO/SAE Reserved	-
P220B	ISO/SAE Reserved	-
P220C	ISO/SAE Reserved	-
P220D	ISO/SAE Reserved	-
P220E	ISO/SAE Reserved	-
P220F	ISO/SAE Reserved	-
P2210	Nitrogen oxides (NOx) sensor, bank 1, heater sense circuit - low input	Wiring short to ground, NOx sensor
P2211	Nitrogen oxides (NOx) sensor, bank 1, heater sense circuit - high input	Wiring short to positive, NOx sensor
P2212	Nitrogen oxides (NOx) sensor, bank 1, heater sense circuit - circuit intermittent	Wiring, poor connection, NOx sensor
P2213	Nitrogen oxides (NOx) sensor, bank 2 - circuit malfunction	Wiring, NOx sensor
P2214	Nitrogen oxides (NOx) sensor, bank 2 - range/performance problem	Wiring, NOx sensor
P2215	Nitrogen oxides (NOx) sensor, bank 2 - low input	Wiring short to ground, NOx sensor
P2216	Nitrogen oxides (NOx) sensor, bank 2 - high input	Wiring short to positive, NOx sensor
P2217	Nitrogen oxides (NOx) sensor, bank 2 - intermittent input	Wiring, poor connection, NOx sensor
P2218	Nitrogen oxides (NOx) sensor, bank 2, heater control - open circuit	Wiring, NOx sensor
P2219	Nitrogen oxides (NOx) sensor, bank 2, heater control - circuit low	Wiring short to ground, NOx sensor
P221A	ISO/SAE Reserved	-
P221B	ISO/SAE Reserved	-
P221C	ISO/SAE Reserved	-
P221D	ISO/SAE Reserved	-
P221E	ISO/SAE Reserved	-
P221F	ISO/SAE Reserved	-
P2220	Nitrogen oxides (NOx) sensor, bank 2, heater control - circuit high	Wiring short to positive, NOx sensor
P2221	Nitrogen oxides (NOx) sensor, bank 2, heater sense circuit - circuit malfunction	Wiring, NOx sensor
P2222	Nitrogen oxides (NOx) sensor, bank 2, heater sense circuit - range/performance problem	Wiring, NOx sensor
P2223	Nitrogen oxides (NOx) sensor, bank 2, heater sense circuit - circuit low	Wiring short to ground, NOx sensor
P2224	Nitrogen oxides (NOx) sensor, bank 2, heater sense circuit - circuit high	Wiring short to positive, NOx sensor
P2225	Nitrogen oxides (NOx) sensor, bank 2, heater sense circuit - circuit intermittent	Wiring, poor connection, NOx sensor
P2226	Barometric pressure (BARO) sensor- circuit malfunction	Wiring, BARO sensor, ECM
P2227	Barometric pressure (BARO) sensor- range/performance problem	Wiring, BARO sensor, ECM
P2228	Barometric pressure (BARO) sensor- circuit low	Wiring short to ground, BARO sensor, ECM
P2229	Barometric pressure (BARO) sensor- circuit high	Wiring short to positive, BARO sensor, ECM
P222A	Barometric Pressure Sensor "B" Circuit Range/Performance	-
P222B	Barometric Pressure Sensor "B" Circuit Low	-
P222C	Barometric Pressure Sensor "B" Circuit High	-
P222D	Barometric Pressure Sensor "B" Circuit Intermittent/Erratic	-
P222E	Barometric Pressure Sensor "A"/"B" Correlation	-
P222F	ISO/SAE Reserved	-
P2230	Barometric pressure (BARO) sensor - circuit intermittent	Wiring, poor connection, BARO sensor, ECM
P2231	Heated oxygen sensor (H028) 1, bank 1 - signal circuit shorted to heater circuit / - no signal	Wiring, H025 / Wiring, H025, ECM
P2232	Heated oxygen sensor (H028) 2, bank 1 - signal circuit shorted to heater circuit / - implausible signal	Wiring, H025 / Wiring, short to positive, short to ground, H025, ECM
P2233	Heated oxygen sensor (H028) 3, bank 1 - signal circuit shorted to heater circuit	Wiring, H025
P2234	Heated oxygen sensor (H028) 1, bank 2 - signal circuit shorted to heater circuit / - no signal	Wiring, H025 / Wiring, H025, ECM
P2235	Heated oxygen sensor (H02S) 2, bank 2 - signal circuit shorted to heater circuit / - implausible signal	Wiring, H025 / Wiring, short to positive, short to ground, H025, ECM
P2236	Heated oxygen sensor (H028) 3, bank 2 - signal circuit shorted to heater circuit	Wiring, H025
P2237	Heated oxygen sensor (H028) 1, bank 1, positive current control - open circuit / - open circuit / - no signal	Wiring, H025 / Wiring, H025, ECM
P2238	Heated oxygen sensor (H028) 1, bank 1, positive current control - circuit low / - implausible signal	Wiring short to ground, H02S / Wiring, short to positive, short to ground, H025, ECM
P2239	Heated oxygen sensor (H028) 1, bank 1, positive current control - circuit high	Wiring short to positive, H025
P223A	ISO/SAE Reserved	-
P223B	ISO/SAE Reserved	-
P223C	ISO/SAE Reserved	-
P223D	ISO/SAE Reserved	-
P223E	ISO/SAE Reserved	-
P223F	ISO/SAE Reserved	-
P2240	Heated oxygen sensor (H028) 1, bank 2, positive current control - open circuit / - no signal	Wiring, H025 / Wiring, H025, ECM
P2241	Heated oxygen sensor (H028) 1, bank 2, positive current control - circuit low / - implausible signal	Wiring short to ground, H025 / Wiring, short to positive, short to ground, H025, ECM
P2242	Heated oxygen sensor (H028) 1, bank 2, positive current control - circuit high	Wiring short to positive, H025
P2243	Heated oxygen sensor (H028) 1, bank 1, reference voltage - open circuit / -no signal	Wiring, H025 / Wiring, H025, ECM
P2244	Heated oxygen sensor (H028) 1, bank 1, reference voltage - performance problem	Wiring, H025
P2245	Heated oxygen sensor (H028) 1, bank 1, reference voltage - circuit low	Wiring short to ground, H025
P2246	Heated oxygen sensor (H028) 1, bank 1, reference voltage - circuit high	Wiring short to positive, H025
P2247	Heated oxygen sensor (H028) 1, bank 2, reference voltage - open circuit / - no signal	Wiring, H025 / Wiring, H025, ECM
P2248	Heated oxygen sensor (H02S) 1, bank 2, reference voltage - performance problem	Wiring, H025
P2249	Heated oxygen sensor (H02S) 1, bank 2, reference voltage - circuit low	Wiring short to ground, H025
P224A	ISO/SAE Reserved	-
P224B	ISO/SAE Reserved	-
P224C	ISO/SAE Reserved	-
P224D	ISO/SAE Reserved	-
P224E	ISO/SAE Reserved	-
P224F	Barometric Pressure Sensor "B" Circuit	-
P224F	ISO/SAE Reserved	-
P2250	Heated oxygen sensor (H02S) 1, bank 2, reference voltage - circuit high	Wiring short to positive, H025
P2251	Heated oxygen sensor (H02S) 1, bank 1, negative current control - open circuit / - no signal	Wiring, H025 / Wiring, H025, ECM
P2252	Heated oxygen sensor (H02S) 1, bank 1, negative current control - circuit low	Wiring short to ground, H025
P2253	Heated oxygen sensor (H02S) 1, bank 1, negative current control - circuit high	Wiring short to positive, H025
P2254	Heated oxygen sensor (H02S) 1, bank 2, negative current control - open circuit / - no signal	Wiring, H025 / Wiring, H025, ECM
P2255	Heated oxygen sensor (H02S) 1, bank 2, negative current control - circuit low	Wiring short to ground, H025
P2256	Heated oxygen sensor (H02S) 1, bank 2, negative current control - circuit high	Wiring short to positive, H025
P2257	Secondary air injection (AIR) system, control A - circuit low	Wiring short to ground, AIR pump relay, AIR pump, AIR solenoid
P2258	Secondary air injection (AIR) system, control A - circuit high	Wiring short to positive, AIR pump relay, AIR pump, AIR solenoid
P2259	Secondary air injection (AIR) system, control B - circuit low	Wiring short to ground, AIR pump relay, AIR pump, AIR solenoid
P225A	ISO/SAE Reserved	-
P225B	ISO/SAE Reserved	-
P225C	ISO/SAE Reserved	-
P225D	ISO/SAE Reserved	-
P225E	ISO/SAE Reserved	-
P225F	ISO/SAE Reserved	-
P2260	Secondary air injection (AIR) system, control B - circuit high	Wiring short to positive, AIR pump relay, AIR pump, AIR solenoid
P2261	Turbocharger (TC) bypass valve/supercharger (8C) bypass valve	Mechanical fault
P2262	Turbocharger (TC) boost pressure not detected	Mechanical fault
P2263	Turbocharger (TC) boost pressure/supercharger (8C) boost pressure - performance problem	Mechanical fault
P2264	Fuel/water separator sensor- circuit malfunction	Wiring, fuel/water separator sensor
P2265	Fuel/water separator sensor- range/performance problem	Wiring, fuel/water separator sensor
P2266	Fuel/water separator sensor - circuit low	Wiring short to ground, fuel/water separator sensor
P2267	Fuel/water separator sensor- circuit high	Wiring short to positive, fuel/water separator sensor
P2268	Fuel/water separator sensor - circuit intermittent	Wiring, poor connection, fuel/water separator sensor
P2269	Water in fuel	Water in fuel
P226A	Water-in-fuel warning lamp - circuit malfunction	Wiring, warning lamp, ECM
P226B	Turbocharger/Supercharger Boost Pressure Too High - Mechanical	-
P226C	ISO/SAE Reserved	-
P226D	ISO/SAE Reserved	-
P226E	ISO/SAE Reserved	-
P226F	ISO/SAE Reserved	-
P2270	Heated oxygen sensor (H028) 2, bank 1 - signal stuck lean	Wiring, H025, fuel pressure, injectors, intake leak
P2271	Heated oxygen sensor (H02S) 2, bank 1 - signal stuck rich	Wiring, H025, fuel pressure, injectors, air intake restricted
P2272	Heated oxygen sensor (H02S) 2, bank 2 - signal stuck lean	Wiring, H025, fuel pressure, injectors, intake leak
P2273	Heated oxygen sensor (H028) 2, bank 2 - signal stuck rich	Wiring, H025, fuel pressure, injectors, air intake restricted
P2274	Heated oxygen sensor (H028) 3, bank 1 - signal stuck lean	Wiring, H025, fuel pressure, injectors, intake leak
P2275	Heated oxygen sensor (H028) 3, bank 1 - signal stuck rich	Wiring, H025, fuel pressure, injectors, air intake restricted
P2276	Heated oxygen sensor (H02S) 3, bank 2 - signal stuck lean	Wiring, H025, fuel pressure, injectors, intake leak
P2277	Heated oxygen sensor (H028) 3, bank 2 - signal stuck rich	Wiring, H025, fuel pressure, injectors, air intake restricted
P2278	Heated oxygen sensor (H028) 3, bank 1/heated oxygen sensor (H028) 3, bank 2 - signals transposed	Wiring
P2279	Intake air leak	Mechanical fault
P227A	ISO/SAE Reserved	-
P227B	ISO/SAE Reserved	-
P227C	ISO/SAE Reserved	-
P227D	ISO/SAE Reserved	-
P227E	ISO/SAE Reserved	-
P227F	ISO/SAE Reserved	-
P2280	Air leak/blockage between air filter and mass air flow (MAF) sensor	Mechanical fault
P2281	Air leak between mass air flow (MAF) sensor and throttle body	Mechanical fault
P2282	Air leak between throttle body and intake valves	Mechanical fault
P2283	Injector control pressure sensor - circuit malfunction	Wiring, injector control pressure sensor
P2284	Injector control pressure sensor - range/performance problem	Wiring, injector control pressure sensor
P2285	Injector control pressure sensor - circuit low	Wiring short to ground, injector control pressure sensor
P2286	Injector control pressure sensor - circuit high	Wiring short to positive, injector control pressure sensor
P2287	Injector control pressure sensor - circuit intermittent	Wiring, poor connection, injector control pressure sensor
P2288	Injector control pressure- pressure too high	Fuel pressure regulator, injector control pressure sensor
P2289	Injector control pressure, engine off- pressure too high	Fuel pressure regulator
P228A	Fuel Pressure Regulator 1 - Forced Engine Shutdown	-
P228B	Fuel Pressure Regulator 2 - Forced Engine Shutdown	-
P228C	Fuel Pressure Regulator 1 Exceeded Control Limits - Pressure Too Low	-
P228D	Fuel Pressure Regulator 1 Exceeded Control Limits - Pressure Too High	-
P228E	Fuel Pressure Regulator 1 Exceeded Learning Limits - Too Low	-
P228F	Fuel Pressure Regulator 1 Exceeded Learning Limits - Too High	-
P2290	Injector control pressure - pressure too low	Fuel pressure regulator, injector control pressure sensor
P2291	Injector control pressure, engine cranking - pressure too low	Fuel pressure regulator, injector control pressure sensor
P2292	Injector control pressure - erratic	Fuel pressure regulator, injector control pressure sensor
P2293	Fuel pressure regulator 2 - performance problem	Wiring, fuel pressure regulator
P2294	Fuel pressure regulator 2 - circuit malfunction	Wiring, fuel pressure regulator
P2295	Fuel pressure regulator 2 - circuit low	Wiring short to ground, fuel pressure regulator
P2296	Fuel pressure regulator 2 - circuit high	Wiring short to positive, fuel pressure regulator
P2297	Heated oxygen sensor (H028) 1, bank 1 - signal out of range during deceleration	H025, intake leak, exhaust leak, injectors
P2298	Heated oxygen sensor (H02S) 1, bank 2 - signal out of range during deceleration	H02S, intake leak, exhaust leak, injectors
P2299	Brake pedal position (BPP) switch/accelerator pedal position (APP) sensor- signals incompatible	Wiring, BPP switch, APP sensor
P229A	Fuel Pressure Regulator 2 Exceeded Control Limits - Pressure Too Low	-
P229B	Fuel Pressure Regulator 2 Exceeded Control Limits - Pressure Too High	-
P229C	Fuel Pressure Regulator 2 Exceeded Learning Limits - Too Low	-
P229D	Fuel Pressure Regulator 2 Exceeded Learning Limits - Too High	-
P229E – P22FF	ISO/SAE Reserved	-
P229F	NOx Sensor Circuit Range/Performance Bank 2
P2300 – P2399 (Ignition system or misfire)
P2300	Ignition coil A, primary circuit - circuit low	Wiring short to ground, ignition coil
P2301	Ignition coil A, primary circuit - circuit high	Wiring short to positive, ignition coil
P2302	Ignition coil A, secondary circuit - malfunction	Wiring, ignition coil
P2303	Ignition coil B, primary circuit - circuit low	Wiring short to ground, ignition coil
P2304	Ignition coil B, primary circuit- circuit high	Wiring short to positive, ignition coil
P2305	Ignition coil B, secondary circuit - malfunction	Wiring, ignition coil
P2306	Ignition coil C, primary circuit - circuit low	Wiring short to ground, ignition coil
P2307	Ignition coil C, primary circuit - circuit high	Wiring short to positive, ignition coil
P2308	Ignition coil C, secondary circuit - malfunction	Wiring, ignition coil
P2309	Ignition coil D, primary circuit- circuit low	Wiring short to ground, ignition coil
P230A	ISO/SAE Reserved	-
P230B	ISO/SAE Reserved	-
P230C	ISO/SAE Reserved	-
P230D	ISO/SAE Reserved	-
P230E	ISO/SAE Reserved	-
P230F	ISO/SAE Reserved	-
P2310	Ignition coil D, primary circuit - circuit high	Wiring short to positive, ignition coil
P2311	Ignition coil D, secondary circuit- malfunction	Wiring, ignition coil
P2312	Ignition coil E, primary circuit - circuit low	Wiring short to ground, ignition coil
P2313	Ignition coil E. primary circuit - circuit high	Wiring short to positive, ignition coil
P2314	Ignition coil E, secondary circuit - malfunction	Wiring, ignition coil
P2315	Ignition coil F, primary circuit - circuit low	Wiring short to ground, ignition coil
P2316	Ignition coil F, primary circuit - circuit high	Wiring short to positive, ignition coil
P2317	Ignition coil F, secondary circuit - malfunction	Wiring, ignition coil
P2318	Ignition coil G, primary circuit - circuit low	Wiring short to ground, ignition coil
P2319	Ignition coil G, primary circuit- circuit high	Wiring short to positive, ignition coil
P231A	ISO/SAE Reserved	-
P231B	ISO/SAE Reserved	-
P231C	ISO/SAE Reserved	-
P231D	ISO/SAE Reserved	-
P231E	ISO/SAE Reserved	-
P231F	ISO/SAE Reserved	-
P2320	Ignition coil G, secondary circuit - malfunction	Wiring, ignition coil
P2321	Ignition coil H, primary circuit - circuit low	Wiring short to ground, ignition coil
P2322	Ignition coil H, primary circuit - circuit high	Wiring short to positive, ignition coil
P2323	Ignition coil H, secondary circuit- malfunction	Wiring, ignition coil
P2324	Ignition coil I, primary circuit- circuit low	Wiring short to ground, ignition coil
P2325	Ignition coil I, primary circuit- circuit high	Wiring short to positive, ignition coil
P2326	Ignition coil I, secondary circuit- malfunction	Wiring, ignition coil
P2327	Ignition coil J, primary circuit- circuit low	Wiring short to ground, ignition coil
P2328	Ignition coil J, primary circuit - circuit high	Wiring short to positive, ignition coil
P2329	Ignition coil J, secondary circuit- malfunction	Wiring, ignition coil
P232A	ISO/SAE Reserved	-
P232B	ISO/SAE Reserved	-
P232C	ISO/SAE Reserved	-
P232D	ISO/SAE Reserved	-
P232E	ISO/SAE Reserved	-
P232F	ISO/SAE Reserved	-
P2330	Ignition coil K, primary circuit - circuit low	Wiring short to ground, ignition coil
P2331	Ignition coil K, primary circuit - circuit high	Wiring short to positive, ignition coil
P2332	Ignition coil K, secondary circuit - malfunction	Wiring, ignition coil
P2333	Ignition coil L, primary circuit - circuit low	Wiring short to ground, ignition coil
P2334	Ignition coil L, primary circuit - circuit high	Wiring short to positive, ignition coil
P2335	Ignition coil L, secondary circuit - malfunction	Wiring, ignition coil
P2336	Cylinder 1 - above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P2337	Cylinder 2 - above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P2338	Cylinder 3 - above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P2339	Cylinder 4 - above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P233A	ISO/SAE Reserved	-
P233B	ISO/SAE Reserved	-
P233C	ISO/SAE Reserved	-
P233D	ISO/SAE Reserved	-
P233E	ISO/SAE Reserved	-
P233F	ISO/SAE Reserved	-
P2340	Cylinder 5 - above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P2341	Cylinder 6 - above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P2342	Cylinder 7 - above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P2343	Cylinder 8 - above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P2344	Cylinder 9 - above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P2345	Cylinder 10 - above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P2346	Cylinder 11 - above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P2347	Cylinder 12- above knock threshold	Ignition timing, knock sensor (KS), fuel quality, mechanical fault
P2348 – P23FF	ISO/SAE Reserved	-
P2355	EGR Flow Rate Too High Or Too Low
P2359	Boost pressure control maximum exceeded
P2400 – P2499 (Emission control)
P2400	Evaporative emission (EVAP) leak detection pump, control - open circuit	Wiring, EVAP leak detection pump
P2401	Evaporative emission (EVAP) leak detection pump, control - circuit low	Wiring short to ground, EVAP leak detection pump
P2402	Evaporative emission (EVAP) leak detection pump, control - circuit high	Wiring short to positive, EVAP leak detection pump
P2403	Evaporative emission (EVAP) leak detection pump, sense circuit - open circuit	Wiring, EVAP leak detection pump
P2404	Evaporative emission (EVAP) leak detection pump, sense circuit - range/performance problem	Wiring, EVAP leak detection pump
P2405	Evaporative emission (EVAP) leak detection pump, sense circuit - circuit low	Wiring short to ground, EVAP leak detection pump
P2406	Evaporative emission (EVAP) leak detection pump, sense circuit- circuit high	Wiring short to positive, EVAP leak detection pump
P2407	Evaporative emission (EVAP) leak detection pump, sense circuit - circuit intermittent/erratic	Wiring, poor connection, EVAP leak detection pump
P2408	Fuel filler cap warning sensor/switch - circuit malfunction	Wiring, fuel filler cap warning sensor/switch
P2409	Fuel filler cap warning sensor/switch - range/performance problem	Wiring, fuel filler cap warning sensor/switch
P240A	Evaporative emission (EVAP) leak detection pump heater - open circuit	Wiring, EVAP leak detection pump heater, ECM
P240B	Evaporative emission (EVAP) leak detection pump heater - circuit low	Wiring, EVAP leak detection pump heater, ECM
P240C	Evaporative emission (EVAP) leak detection pump heater - circuit high	Wiring, EVAP system leak detection pump heater, ECM
P240D	ISO/SAE Reserved	-
P240E	ISO/SAE Reserved	-
P240F	ISO/SAE Reserved	-
P2410	Fuel filler cap warning sensor/switch - circuit low	Wiring short to ground, fuel filler cap warning sensor/switch
P2411	Fuel filler cap warning sensor/switch - circuit high	Wiring short to positive, fuel filler cap warning sensor/switch
P2412	Fuel filler cap warning sensor/switch - circuit intermittent/erratic	Wiring, poor connection, fuel filler cap warning sensor/switch
P2413	Exhaust gas recirculation (EGR) system - performance problem	Hoses blocked/leaking, EGR solenoid, EGR valve
P2414	Heated oxygen sensor (H02S) 1, bank 1 - exhaust sample error / - implausible signal	Exhaust leak, H02S / Wiring, short to positive, shrot to ground, H02S, ECM
P2415	Heated oxygen sensor (H02S) 1, bank 2 - exhaust sample error / Engine coolant temperature (ECT) sensor - low signal	Exhaust leak, H02S / Wiring, short to ground, ECT sensor, ECM
P2416	Heated oxygen sensor (H02S) 2, bank 1/heated oxygen sensor (H02S) 3, bank 1 - signals transposed	Wiring
P2417	Heated oxygen sensor (H02S) 2, bank 2/heated oxygen sensor (H02S) 3, bank 2 - signals transposed	Wiring
P2418	Evaporative emission (EVAP) switching valve - open circuit	Wiring, EVAP switching valve
P2419	Evaporative emission (EVAP) switching valve - circuit low	Wiring short to ground, EVAP switching valve
P241A	ISO/SAE Reserved	-
P241B	ISO/SAE Reserved	-
P241C	ISO/SAE Reserved	-
P241D	ISO/SAE Reserved	-
P241E	ISO/SAE Reserved	-
P241F	ISO/SAE Reserved	-
P2420	Evaporative emission (EVAP) switching valve - circuit high	Wiring short to positive, EVAP switching valve
P2421	Evaporative emission (EVAP) vent valve - valve stuck open	EVAP vent valve
P2422	Evaporative emission (EVAP) vent valve - valve stuck closed	EVAP vent valve
P2423	Hydrocarbon (HC) catalytic converter, bank 1 - efficiency below threshold	HC catalytic converter
P2424	Hydrocarbon (HC) catalytic converter, bank 2 - efficiency below threshold	HC catalytic converter
P2425	Exhaust gas recirculation (EGR) cooling valve - open circuit	Wiring, EGR cooling valve
P2426	Exhaust gas recirculation (EGR) cooling valve - circuit low	Wiring short to ground, EGR cooling valve
P2427	Exhaust gas recirculation (EGR) cooling valve - circuit high	Wiring short to positive, EGR cooling valve
P2428	Exhaust gas temperature (EGT), bank 1 - temperature too high	-
P2429	Exhaust gas temperature (EGT), bank 2 - temperature too high	-
P242A	Exhaust gas temperature sensor 3, bank 1 -circuit malfunction	Wiring, exhaust gas temperature sensor, ECM
P242B	Exhaust gas temperature sensor 3, bank 1 -circuit range/performance	Wiring, exhaust gas temperature sensor, ECM
P242C	Exhaust gas temperature sensor 3, bank 1 -circuit low	Wiring, exhaust gas temperature sensor, ECM
P242D	Exhaust gas temperature sensor 3, bank 1 -circuit high	Wiring, exhaust gas temperature sensor, ECM
P242E	Exhaust gas temperature sensor 3, bank 1 -circuit intermittent/erratic	Wiring, exhaust gas temperature sensor, ECM
P242F	Diesel particulate filter (DPF) - restriction/ash accumulation	DPF
P2430	Secondary air injection (AIR) system, air flow/pressure sensor, bank 1 - circuit malfunction	Wiring, air flow/pressure sensor
P2431	Secondary air injection (AIR) system, air flow/ pressure sensor, bank 1 - range/performance problem	Wiring, air flow/pressure sensor
P2432	Secondary air injection (AIR) system, air flow/ pressure sensor, bank 1 - circuit low	Wiring short to ground, air flow/pressure sensor
P2433	Secondary air injection (AIR) system, air flow/pressure sensor, bank 1 - circuit high	Wiring short to positive, air flow/pressure sensor
P2434	Secondary air injection (AIR) system, air flow/ pressure sensor, bank 1 - circuit intermittent/ erratic	Wiring, poor connection, air flow/pressure sensor
P2435	Secondary air injection (AIR) system, air flow/pressure sensor, bank 2 - circuit malfunction	Wiring, air flow/pressure sensor
P2436	Secondary air injection (AIR) system, air flow/ pressure sensor, bank 2 - range/performance problem	Wiring, air flow/pressure sensor
P2437	Secondary air injection (AIR) system, air flow/pressure sensor, bank 2 - circuit low	Wiring short to ground, air flow/pressure sensor
P2438	Secondary air injection (AIR) system, air flow/pressure sensor, bank 2 - circuit high	Wiring short to positive, air flow/pressure sensor
P2439	Secondary air injection (AIR) system, air flow/ pressure sensor, bank 2 - circuit intermittent/ erratic	Wiring, poor connection, air flow/pressure sensor
P243A	ISO/SAE Reserved	-
P243B	ISO/SAE Reserved	-
P243C	ISO/SAE Reserved	-
P243D	ISO/SAE Reserved	-
P243E	ISO/SAE Reserved	-
P243F	ISO/SAE Reserved	-
P2440	Secondary air injection (AIR) switching valve, bank 1 - valve stuck open	AIR switching valve
P2441	Secondary air injection (AIR) switching valve, bank 1 - valve stuck closed	AIR switching valve
P2442	Secondary air injection (AIR) switching valve, bank 2 - valve stuck open	AIR switching valve
P2443	Secondary air injection (AIR) switching valve, bank 2 - valve stuck closed	AIR switching valve
P2444	Secondary air injection (AIR) pump, bank 1 - pump stuck on	AIR pump
P2445	Secondary air injection (AIR) pump, bank 1 - pump stuck off	AIR pump
P2446	Secondary air injection (AIR) pump, bank 2 - pump stuck on	AIR pump
P2447	Secondary air injection (AIR) pump, bank 2 - pump stuck off	AIR pump
P244A	Diesel particulate filter (DPF) - differential pressure too low	-
P244B	Diesel particulate filter (DPF) - differential pressure too high	DPF regeneration fluid, Large exhaust leaks, DPF pressure sensor, Open or shorted circuit/s
P244C	Diesel particulate filter (DPF), bank 1 - exhaust temperature too low for regeneration	-
P244D	Diesel particulate filter (DPF), bank 1 - exhaust temperature too high for regeneration	-
P244E	Diesel particulate filter (DPF), bank 2 - exhaust temperature too low for regeneration	-
P244F	Diesel particulate filter (DPF), bank 2 - exhaust temperature too high for regeneration	-
P2450	Evaporative Emission System Switching Valve Performance/Stuck Open
P2452	Diesel Particulate Filter Pressure Sensor "A" Circuit
P2453	Diesel Particulate Filter Pressure Sensor "A" Circuit Range/Performance	Wiring, DPF, Pressure sensor, Pressure feed lines, PCM
P2454	Diesel Particulate Filter Pressure Sensor "A" Circuit Low	Wiring, Defective differential pressure sensor, PCM
P2455	Diesel Particulate Filter Pressure Sensor "A" Circuit High
P2458	Diesel Particulate Filter Regeneration Duration	-
P2459	Diesel Particulate Filter Regeneration Frequency	DEF fluid, DPF system failure, Wiring, Sensors
P245A	Exhaust gas recirculation (EGR) cooler bypass valve - control circuit malfunction	Wiring, EGR cooler bypass valve, ECM
P245B	Exhaust gas recirculation (EGR) cooler bypass valve - control circuit range/performance / Heated oxygen sensor (H02S) 1, bank 1 - no signal	Wiring, EGR cooler bypass valve, ECM / Wiring, H02S, ECM
P245C	Exhaust gas recirculation (EGR) cooler bypass valve - control circuit low / Heated oxygen sensor (H02S) 1, bank 1 - signal high, heater circuit	Wiring, EGR cooler bypass valve, ECM / Wiring, short to positive, H02S, ECM
P245D	Exhaust gas recirculation (EGR) cooler bypass valve - control circuit high / Heated oxygen sensor (H02S) 1, bank 1 - signal low	Wiring, EGR cooler bypass valve, ECM / Wiring, short to ground, H02S, ECM
P245E	Diesel particulate filter (DPF) pressure sensor B - circuit malfunction	Wiring, DPF pressure sensor, ECM
P245F	Diesel particulate filter (DPF) pressure differential sensor 8 - circuit range/performance	Wiring, DPF pressure differential sensor, ECM
P2460	Diesel Particulate Filter Pressure Sensor "B" Circuit Low	-
P2461	Diesel Particulate Filter Pressure Sensor "B" Circuit High	-
P2462	Diesel Particulate Filter Pressure Sensor "B" Circuit Intermittent/Erratic	-
P2463	Diesel Particulate Filter Restriction - Soot Accumulation	Wiring, DPF pressure sensor, Pressure hoses, Wiring, Clogged DPF, SCR system malfunction, High or low exhaust temperature, Defective EGR valve / circuit, Low fuel, PCM failure
P2464	Diesel Particulate Filter Differential Pressure Too Low Bank 2	-
P2465	Diesel Particulate Filter Differential Pressure Too High Bank 2	-
P2466	Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3	-
P2467	Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 3	-
P2468	Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 3	-
P2469	Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 3	-
P246A	Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 3	-
P246B	Vehicle Conditions Incorrect for Diesel Particulate Filter Regeneration	-
P246C	Diesel Particulate Filter Restriction - Forced Limited Power	-
P246D	Diesel Particulate Filter Pressure Sensor "A"/"B" Correlation	-
P246E	Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 4	-
P246F	Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 4	-
P2470	Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 4	-
P2471	Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 4	-
P2472	Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 4	-
P2473	Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 4	-
P2474	Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4	-
P2475	Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 4	-
P2476	Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 4	-
P2477	Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 4	-
P2478	Exhaust Gas Temperature Out of Range Bank 1 Sensor 1	-
P2479	Exhaust Gas Temperature Out of Range Bank 1 Sensor 2	-
P247A	Exhaust Gas Temperature Out of Range Bank 1 Sensor 3	-
P247B	Exhaust Gas Temperature Out of Range Bank 1 Sensor 4	-
P247C	Exhaust Gas Temperature Out of Range Bank 2 Sensor 1	-
P247D	Exhaust Gas Temperature Out of Range Bank 2 Sensor 2	-
P247E	Exhaust Gas Temperature Out of Range Bank 2 Sensor 3	-
P247F	Exhaust Gas Temperature Out of Range Bank 2 Sensor 4	-
P2480	Exhaust Gas Temperature Sensor Circuit/Open Bank 1 Sensor 5	-
P2481	Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 5	-
P2482	Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 5	-
P2483	Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 5	-
P2484	Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 5	-
P2485	Exhaust Gas Temperature Sensor Circuit/Open Bank 2 Sensor 5	-
P2486	Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 5	-
P2487	Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 5	-
P2488	Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 5	-
P2489	Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 5	-
P248A – P24FF	ISO/SAE Reserved	-
P2495	EGR Cooler Bypass Bank 1 Position Sensor Circuit High
P24A4	Diesel Particulate Filter Soot Accumulation Excessive
P24C6	Particulate Matter Sensor Temperature Circuit Error
P2500 – P2599 (Vehicle or idle speed control)
P2500	Alternator warning lamp, L-terminal - circuit low	Wiring short to ground, alternator, instrument panel
P2501	Alternator warning lamp, L-terminal - circuit high	Wiring short to positive, alternator, instrument panel
P2502	Charging system voltage	Wiring, alternator, battery
P2503	Charging system - voltage low	Wiring, alternator, battery
P2504	Charging system - voltage high	Wiring, alternator, battery
P2505	Engine control module (ECM) - supply voltage	Wiring, fuses, engine control (EC) relay
P2506	Engine control module (ECM) - supply voltage, range/performance problem	Wiring, fuses, engine control (EC) relay
P2507	Engine control module (ECM)- supply voltage low	Wiring short to ground, fuses, engine control (EC) relay
P2508	Engine control module (ECM) - supply voltage high	Charging system
P2509	Engine control module (ECM) - supply voltage, intermittent	Wiring, fuses, engine control (EC) relay
P250A	Engine oil level sensor - circuit malfunction	Wiring, engine oil level sensor, ECM
P250A	Long term fuel trim (LTFT)- range/performance problem	Catalytic converter, exhaust leak, injector leakage, H025
P250B	Engine oil level sensor- circuit range/performance	Wiring, engine oil level sensor, ECM
P250C	Engine oil level sensor- circuit low	Wiring, engine oil level sensor, ECM
P250D	Engine oil level sensor - circuit high	Wiring, engine oil level sensor, ECM
P250E	Engine oil level sensor - circuit intermittent/erratic	Wiring, engine oil level sensor, ECM
P250F	Engine oil level too low	Wiring, engine oil level, ECM
P2510	Power take-off (PTO), engine shut-down - open circuit	Wiring, ECM
P2510	Engine control (EC) relay, sense circuit - range/performance problem	Wiring, fuses, EC relay
P2511	Engine control (EC) relay, sense circuit - circuit intermittent	Wiring, poor connection, EC relay
P2512	Event data recorder request - open circuit	Wiring
P2513	Event data recorder request - circuit low	Wiring short to ground
P2514	Event data recorder request - circuit high	Wiring short to positive
P2515	A/C refrigerant pressure sensor B - circuit malfunction	Wiring, AJC refrigerant pressure sensor
P2516	A/C refrigerant pressure sensor B - range/performance problem	Wiring, AJC refrigerant pressure sensor
P2517	AIC refrigerant pressure sensor B - circuit low	Wiring short to ground, AIC refrigerant pressure sensor
P2518	A/C refrigerant pressure sensor B - circuit high	Wiring short to positive, AIC refrigerant pressure sensor
P2519	A/C request A - circuit malfunction	Wiring, AIC control module, AJC master switch, AJC refrigerant pressure switch/sensor
P251A	Power take-off (PTO) enable switch - open circuit	Wiring, PTO enable switch, ECM
P251B	Power take-off (PTO) enable switch - circuit low	Wiring, PTO enable switch, ECM
P251C	Power take-off (PTO) enable switch - circuit high	Wiring, PTO enable switch, ECM
P251E	Power take-off (PTO)- engine shut-down- circuit low	Wiring, ECM
P251F	Power take-off (PTO) monitoring, engine shut-off control - circuit high	Wiring, ECM
P2520	AJC request A - circuit low	Wiring short to ground, AJC control module, AJC master switch, AJC refrigerant pressure switch/sensor
P2521	AJC request A - circuit high	Wiring short to positive, AJC control module
P2522	AJC request B - circuit malfunction	Wiring, AJC control module, AJC master switch, AJC refrigerant pressure switch/sensor
P2523	AJC request B - circuit low	Wiring short to ground, AJC control module, AJC master switch, AJC refrigerant pressure switch/sensor
P2524	AJC request B - circuit high	Wiring short to positive, AJC control module
P2525	Vacuum reservoir pressure sensor - circuit malfunction	Wiring, vacuum reservoir pressure sensor
P2526	Vacuum reservoir pressure sensor - range/performance problem	Wiring, vacuum reservoir pressure sensor, hoses blocked/leaking
P2527	Vacuum reservoir pressure sensor- circuit low	Wiring short to ground, vacuum reservoir pressure sensor
P2528	Vacuum reservoir pressure sensor - circuit high	Wiring short to positive, vacuum reservoir pressure sensor
P2529	Vacuum reservoir pressure sensor - circuit intermittent	Wiring, poor connection, vacuum reservoir pressure sensor
P252A	Engine oil quality sensor - circuit malfunction	Wiring, engine oil quality sensor, ECM
P252B	Engine oil quality sensor - circuit range/performance	Wiring, engine oil quality sensor, ECM
P252C	Engine oil quality sensor - circuit low	Wiring, engine oil quality sensor, ECM
P252D	Engine oil quality sensor - circuit high	Wiring, engine oil quality sensor, ECM
P252E	Engine oil quality sensor - circuit intermittent/erratic	Wiring, engine oil quality sensor, ECM
P252F	Engine oil level too high	Engine oil level
P2530	Ignition switch, ON position - circuit malfunction	Wiring, fuse, ignition switch
P2531	Ignition switch, ON position - circuit low	Wiring short to ground, fuse, ignition switch
P2532	Ignition switch, ON position - circuit high	Wiring short to positive, fuse, ignition switch
P2533	Ignition switch, ON/start position -circuit malfunction	Wiring, fuse, ignition switch
P2534	Ignition switch, ON/start position - circuit low	Wiring short to ground, fuse, ignition switch
P2535	Ignition switch, ON/start position - circuit high	Wiring short to positive, fuse, ignition switch
P2536	Ignition switch, accessory position - circuit malfunction	Wiring, fuse, ignition switch
P2537	Ignition switch, accessory position - circuit low	Wiring short to ground, fuse, ignition switch
P2538	Ignition switch, accessory position - circuit high	Wiring short to positive, fuse, ignition switch
P2539	Fuel low pressure sensor - circuit malfunction	Wiring, fuel low pressure sensor
P253A	Power take-off (PTO) monitoring - circuit open	Wiring, ECM
P253B	Power take-off (PTO) monitoring- circuit range/performance	Wiring, ECM
P253C	Power take-off (PTO) monitoring- circuit low	Wiring, ECM
P253D	Power take-off (PTO) monitoring- circuit high	Wiring, ECM
P253E	Power take-off (PTO) - sense circuit intermittent malfunction	-
P253F	Engine oil deteriorated	Engine oil
P2540	Fuel low pressure sensor - range/performance problem	Wiring, fuel low pressure sensor
P2541	Fuel low pressure sensor- circuit low	Wiring short to ground, fuel low pressure sensor
P2542	Fuel low pressure sensor - circuit high	Wiring short to positive, fuel low pressure sensor
P2543	Fuel low pressure sensor- circuit intermittent	Wiring, poor connection, fuel low pressure sensor
P2544	Torque management request, input signal A - malfunction ·	Wiring, ECM, TCM
P2545	Torque management request, input signal A - range/performance problem	Wiring, ECM, TCM
P2546	Torque management request, input signal A - signal low	Wiring short to ground, ECM, TCM
P2547	Torque management request, input signal A - signal high	Wiring short to positive, ECM, TCM
P2548	Torque management request, input signal B - malfunction	Wiring, ECM, TCM
P2549	Torque management request, input signal B - range/performance problem	Wiring, ECM, TCM
P254A	Power take-off (PTO) speed selector sensor/switch 1 - open circuit	Wiring, PTO speed selector sensor/switch, ECM
P254B	Power take-off (PTO) speed selector sensor/switch 1 - circuit range/performance	Wiring, PTO speed selector sensor/switch, ECM
P254C	Power take-off (PTO) speed selector sensor/switch 1 - circuit low	Wiring, PTO speed selector sensor/switch, ECM
P254D	Power take-off (PTO) speed selector sensor/switch 1 - circuit high	Wiring, PTO speed selector sensor/switch, ECM
P254E	Power take-off (PTO) speed selector sensor/switch 1 - circuit intermittent/erratic	Wiring, PTO speed selector sensor/switch,ECM
P254F	Bonnet switch - open circuit	Wiring, bonnet switch, ECM
P2550	Torque management request, input signal B - signal low	Wiring short to ground, ECM, TCM
P2551	Torque management request, input signal B - signal high	Wiring short to positive, ECM, TCM
P2552	Throttle/fuel inhibit - circuit malfunction	Wiring
P2553	Throttle/fuel inhibit - range/performance problem	Wiring
P2554	Throttle/fuel inhibit - circuit low	Wiring short to ground
P2555	Throttle/fuel inhibit - circuit high	Wiring short to positive
P2556	Engine coolant 'low' sensor/switch - circuit malfunction	Wiring, engine coolant 'low' sensor/switch
P2557	Engine coolant 'low' sensor/switch - range/performance problem	Wiring, engine coolant 'low' sensor/switch
P2558	Engine coolant 'low' sensor/switch - circuit low	Wiring short to ground, engine coolant 'low' sensor/switch
P2558	Power take-off (PTO) speed selector sensor/switch 2 - circuit range/performance	Wiring, PTO speed selector sensor/switch, ECM
P2559	Engine coolant 'low' sensor/switch - circuit high	Wiring short to positive, engine coolant 'low' sensor/switch
P255A	Power take-off (PTO) speed selector sensor/switch 2 - open circuit	Wiring, PTO speed selector sensor/switch, ECM
P255C	Power take-off (PTO) speed selector sensor/switch 2 - circuit low	Wiring, PTO speed selector sensor/switch, ECM
P255D	Power take-off (PTO) speed selector sensor/switch 2 - circuit high	Wiring, PTO speed selector sensor/switch, ECM
P255E	Power take-off (PTO) speed selector sensor/switch 2 - circuit intermittent/erratic	Wiring, PTO speed selector sensor/switch, ECM
P255F	AJC request A - circuit range/performance	Wiring, AJC control module, ECM
P2560	Engine coolant level low	Engine coolant level low
P2561	AJC control module - MIL activation requested	AIC control module trouble codes stored
P2562	Turbocharger (TC) boost control position sensor - circuit malfunction	Wiring, TC boost control position sensor
P2563	Turbocharger (TC) boost control position sensor- range/performance problem	Wiring, TC boost control position sensor
P2564	Turbocharger (TC) boost control position sensor - circuit low	Wiring short to ground, TC boost control position sensor
P2565	Turbocharger {TC) boost control position sensor- circuit high	Wiring short to positive, TC boost control position sensor
P2566	Turbocharger (TC) boost control position sensor - circuit intermittent	Wiring, poor connection, TC boost control position sensor
P2567	Direct ozone reduction catalytic converter temperature sensor- circuit malfunction	Wiring, direct ozone reduction catalytic converter temperature sensor
P2568	Direct ozone reduction catalytic converter temperature sensor- range/performance problem	Wiring, direct ozone reduction catalytic converter temperature sensor
P2569	Direct ozone reduction catalytic converter temperature sensor - circuit low	Wiring short to ground, direct ozone reduction catalytic converter temperature sensor
P256A	Engine idle speed selector sensor/switch - open circuit	Wiring, engine idle speed selector sensor/switch, ECM
P256B	Engine idle speed selector sensor/switch - circuit range/performance	Wiring, engine idle speed selector sensor/switch, ECM
P256C	Engine idle speed selector sensor/switch - circuit low	Wiring, engine idle speed selector sensor/switch, ECM
P256D	Engine idle speed selector sensor/switch - circuit high	Wiring, engine idle speed selector sensor/switch, ECM
P256E	Engine idle speed selector sensor/switch - circuit intermittent/erratic	Wiring, engine idle speed selector sensor/switch, ECM
P256F	AIC request B - circuit range/performance	Wiring, AJC control module, ECM
P2570	Direct ozone reduction catalytic converter temperature sensor - circuit high	Wiring short to positive, direct ozone reduction catalytic converter temperature sensor
P2571	Direct ozone reduction catalytic converter temperature sensor- circuit intermittent/erratic	Wiring, poor connection, direct ozone reduction catalytic converter temperature sensor
P2572	Direct ozone reduction catalytic converter deterioration sensor	Wiring, direct ozone reduction catalytic converter deterioration sensor
P2573	Direct ozone reduction catalytic converter deterioration sensor- range/performance problem	Wiring, direct ozone reduction catalytic converter deterioration sensor
P2574	Direct ozone reduction catalytic converter deterioration sensor - circuit low	Wiring short to ground, direct ozone reduction catalytic converter deterioration sensor
P2575	Direct ozone reduction catalytic converter deterioration sensor - circuit high	Wiring short to positive, direct ozone reduction catalytic converter deterioration sensor
P2576	Direct ozone reduction catalytic converter deterioration sensor - circuit intermittent/erratic	Wiring, poor connection, direct ozone reduction catalytic converter deterioration sensor
P2577	Direct ozone reduction catalytic converter - efficiency below threshold	Direct ozone reduction catalytic converter
P2578	Turbocharger Speed Sensor Circuit	-
P2579	Turbocharger Speed Sensor Circuit Range/Performance	-
P257A	Vacuum reservoir control - open circuit	-
P257B	Vacuum reservoir control - circuit low	-
P257C	Vacuum reservoir control - circuit high	-
P257D	Bonnet switch - circuit range/performance	Wiring, bonnet switch, ECM
P257E	Bonnet switch - circuit low	Wiring, bonnet switch, ECM
P257F	Bonnet switch - circuit high	Wiring, bonnet switch, ECM
P2580	Turbocharger Speed Sensor Circuit Low	-
P2581	Turbocharger Speed Sensor Circuit High	-
P2582	Turbocharger Speed Sensor Circuit Intermittent	-
P2583	Cruise Control Front Distance Range Sensor	-
P2584	Fuel Additive Control Module Requested MIL Illumination	-
P2585	Fuel Additive Control Module Warning Lamp Request	-
P2586	Turbocharger Boost Control Position Sensor "B" Circuit	-
P2587	Turbocharger Boost Control Position Sensor "B" Circuit Range/Performance	-
P2588	Turbocharger Boost Control Position Sensor "B" Circuit Low	-
P2589	Turbocharger Boost Control Position Sensor "B" Circuit High	-
P258A	Vacuum pump - control circuit open	Wiring, vacuum pump, ECM
P258B	Vacuum pump control - range/performance problem	Wiring, vacuum pump, ECM
P258C	Vacuum pump control - circuit low	Wiring, vacuum pump, ECM
P258D	Vacuum pump - control circuit high	Wiring, vacuum pump, ECM
P258E	Power take-off (PTO) enable switch- performance problem	Wiring, PTO enable switch, ECM
P258F	Torque management request - output signal malfunction	Wiring, TCM, ECM
P2590	Turbocharger Boost Control Position Sensor "B" Circuit Intermittent/Erratic	-
P2591	Cruise Control Front Distance Range Sensor Left	-
P2592	Cruise Control Front Distance Range Sensor Right	-
P2593 – P25FF	ISO/SAE Reserved	-
P2598	Turbocharger Boost Control Position Performance Low Position
P25A2	Brake System Control Module "A" Requested MIL Illumination
P2600 – P2699 (ECM – computer output circuit)
P2600	Engine coolant pump motor - open circuit	Wiring, engine coolant pump relay
P2601	Engine coolant pump motor- range/performance problem	Wiring, engine coolant pump relay
P2602	Engine coolant pump motor- circuit low	Wiring short to ground, engine coolant pump relay
P2603	Engine coolant pump motor - circuit high	Wiring short to positive, engine coolant pump relay
P2604	Intake air heater A - range/performance problem	Wiring, intake air heater relay, intake air heater
P2605	Intake air heater A - open circuit	Wiring, intake air heater relay, intake air heater
P2606	Intake air heater B - range/performance problem	Wiring, intake air heater relay, intake air heater
P2607	Intake air heater B - circuit low	Wiring short to ground, intake air heater relay, intake air heater
P2608	Intake air heater B - circuit high	Wiring short to positive, intake air heater relay, intake air heater
P2609	Intake air heater system - performance problem	Wiring, intake air heater relay, intake air heater
P260A	Power take-off (PTO), control - open circuit	Wiring
P260B	Power take-off (PTO), control - circuit low	Wiring, ECM
P260C	Power take-off (PTO) control - circuit high	-
P260D	Power take-off (PTO) engaged warning lamp - control circuit	Wiring, warning lamp, ECM
P260E	Diesel Particulate Filter Regeneration Lamp Control Circuit	-
P260F	Evaporative emission (EVAP) system - monitoring processor performance problem	ECM
P2610	Engine control module (ECM) - internal engine off timer performance	ECM
P2611	NC refrigerant distribution valve - open circuit	Wiring, NC refrigerant distribution valve
P2612	NC refrigerant distribution valve - circuit low	Wiring short to ground, NC refrigerant distribution valve
P2613	NC refrigerant distribution valve - circuit high	Wiring short to positive, AIC refrigerant distribution valve
P2614	Camshaft position (CMP), output signal - open circuit	Wiring, ECM
P2615	Camshaft position (CMP), output signal - circuit low	Wiring short to ground, ECM
P2616	Camshaft position (CMP), output signal - circuit high	Wiring short to positive, ECM
P2617	Crankshaft position (CKP), output signal - open circuit	Wiring, ECM
P2618	Crankshaft position (CKP), output signal - circuit low	Wiring short to ground, ECM
P2619	Crankshaft position (CKP), output signal - circuit high	Wiring short to positive, ECM
P261A	Coolant Pump "B" Control Circuit/Open	-
P261B	Coolant Pump "B" Control Circuit Range/Performance	-
P261C	Coolant Pump "B" Control Circuit Low	-
P261D	Coolant Pump "B" Control Circuit High	-
P261E	ISO/SAE Reserved	-
P261F	ISO/SAE Reserved	-
P2620	Throttle position (TP), output signal - open circuit	Wiring, ECM
P2621	Throttle position (TP), output signal - circuit low	Wiring short to ground, ECM
P2622	Throttle position (TP), output signal - circuit high	Wiring short to positive, ECM
P2623	Injector control pressure regulator- open circuit	Wiring, injector control pressure regulator
P2624	Injector control pressure regulator- circuit low	Wiring short to ground, injector control pressure regulator
P2625	Injector control pressure regulator - circuit high	Wiring short to positive, injector control pressure regulator
P2626	Heated oxygen sensor (H02S) 1, bank 1, pumping current trim - open circuit / - no signal	Wiring, H025, ECM
P2627	Heated oxygen sensor (H02S) 1, bank 1, pumping current trim - circuit low	Wiring short to ground, H025, ECM
P2628	Heated oxygen sensor (H02S) 1, bank 1, pumping current trim - circuit high	Wiring short to positive, H025, ECM
P2629	Heated oxygen sensor (H02S) 1, bank 2, pumping current trim - open circuit / - no signal	Wiring, H025, ECM
P262A	ISO/SAE Reserved	-
P262B	ISO/SAE Reserved	-
P262C	ISO/SAE Reserved	-
P262D	ISO/SAE Reserved	-
P262E	ISO/SAE Reserved	-
P262F	ISO/SAE Reserved	-
P2630	Heated oxygen sensor (H02S) 1, bank 2, pumping current trim - circuit low	Wiring short to ground, H025, ECM
P2631	Heated oxygen sensor (H02S) 1, bank 2, pumping current trim - circuit high	Wiring short to positive, H025, ECM
P2632	Fuel pump (FP) B, control - open circuit	Wiring, FP relay, ECM
P2633	Fuel pump (FP) B, control - circuit low	Wiring short to ground, FP relay, ECM
P2634	Fuel pump (FP) B, control - circuit high	Wiring short to positive, FP relay, ECM
P2635	Fuel pump (FP) A- low flow/performance problem	Fuel filter blocked, fuel pump (FP)
P2636	Fuel pump (FP) B- low flow/performance problem	Fuel filter blocked, fuel pump (FP)
P2637	Torque management, feedback signal A - malfunction	Wiring, ECM, TCM
P2638	Torque management, feedback signal A - range/performance problem	Wiring, ECM, TCM
P2639	Torque management, feedback signal A - signal low	Wiring short to ground, ECM, TCM
P263A	ISO/SAE Reserved	-
P263B	ISO/SAE Reserved	-
P263C	ISO/SAE Reserved	-
P263D	ISO/SAE Reserved	-
P263E	ISO/SAE Reserved	-
P263F	ISO/SAE Reserved	-
P2640	Torque management, feedback signal A - signal high	Wiring short to positive, ECM, TCM
P2641	Torque management, feedback signal B - malfunction	Wiring, ECM, TCM
P2642	Torque management, feedback signal B - range/performance problem	Wiring, ECM, TCM
P2643	Torque management, feedback signal B - signal low	Wiring short to ground, ECM, TCM
P2644	Torque management, feedback signal B - signal high	Wiring short to positive, ECM, TCM
P2645	Rocker arm actuator A, bank 1 - open circuit	Wiring, rocker arm actuator
P2646	Rocker arm actuator A, bank 1 - performance problem or actuator stuck off	Wiring, rocker arm actuator
P2647	Rocker arm actuator A, bank 1 - actuator stuck on	Rocker arm actuator
P2648	Rocker arm actuator A, bank 1 - circuit low	Wiring short to ground, rocker arm actuator
P2649	Rocker arm actuator A, bank 1 - circuit high	Wiring short to positive, rocker arm actuator
P264A	Rocker arm actuator position sensor A, bank 1 - circuit malfunction	Wiring, rocker arm actuator position sensor, ECM
P264B	Rocker arm actuator position sensor A, bank 1 - circuit range/performance	Wiring, rocker arm actuator position sensor, ECM
P264C	Rocker arm actuator position sensor A, bank 1 - circuit low	Wiring, rocker arm actuator position sensor, ECM
P264D	Rocker arm actuator position sensor A, bank 1 - circuit high	Wiring, rocker arm actuator position sensor, ECM
P264E	Rocker arm actuator position sensor A, bank 1 - circuit intermittent/erratic	Wiring, rocker arm actuator position sensor, ECM
P264F	ISO/SAE Reserved	-
P2650	Rocker arm actuator B, bank 1 - open circuit	Wiring, rocker arm actuator
P2651	Rocker arm actuator B, bank 1 - performance problem or actuator stuck off	Rocker arm actuator
P2652	Rocker arm actuator B, bank 1 -actuator stuck on	Rocker arm actuator
P2653	Rocker arm actuator B, bank 1 - circuit low	Wiring short to ground, rocker arm actuator
P2654	Rocker arm actuator B, bank 1 - circuit high	Wiring short to positive, rocker arm actuator
P2655	Rocker arm actuator A, bank 2 - open circuit	Wiring, rocker arm actuator
P2656	Rocker arm actuator A, bank 2 - performance problem or actuator stuck off	Rocker arm actuator
P2657	Rocker arm actuator A, bank 2 - actuator stuck on	Rocker arm actuator
P2658	Rocker arm actuator A, bank 2 - circuit low	Wiring short to ground, rocker arm actuator
P2659	Rocker arm actuator A, bank 2 - circuit high	Wiring short to positive, rocker arm actuator
P265A	Rocker arm actuator position sensor B, bank 1 - circuit malfunction	Wiring, rocker arm actuator position sensor, ECM
P265B	Rocker arm actuator position sensor B, bank 1 - circuit range/performance	Wiring, rocker arm actuator position sensor, ECM
P265C	Rocker arm actuator position sensor B, bank 1 - circuit low	Wiring, rocker arm actuator position sensor, ECM
P265D	Rocker arm actuator position sensor B, bank 1 - circuit high	Wiring, rocker arm actuator position sensor, ECM
P265E	Rocker arm actuator position sensor B, bank 1 - circuit intermittent/erratic	Wiring, rocker arm actuator position sensor, ECM
P265F	ISO/SAE Reserved	-
P2660	Rocker arm actuator B, bank 2 - open circuit	Wiring, rocker arm actuator
P2661	Rocker arm actuator B, bank 2 - performance problem or actuator stuck off	Rocker arm actuator
P2662	Rocker arm actuator B, bank 2- actuator stuck on	Rocker arm actuator
P2663	Rocker arm actuator B, bank 2 - circuit low	Wiring short to ground, rocker arm actuator
P2664	Rocker arm actuator B, bank 2 -circuit high	Wiring short to positive, rocker arm actuator
P2665	Fuel shut-off solenoid B - open circuit	Wiring, fuel shut-off solenoid
P2666	Fuel shut-off solenoid B - circuit low	Wiring short to ground, fuel shut-off solenoid
P2667	Fuel shut-off solenoid B - circuit high	Wiring short to positive, fuel shut-off solenoid
P2668	Fuel mode indicator lamp- circuit malfunction	Wiring, fuel mode indicator lamp
P2669	Actuator supply voltage B - open circuit	Wiring, ECM
P266A	Rocker arm actuator position sensor A, bank 2 - circuit malfunction	Wiring, rocker arm actuator position sensor, ECM
P266B	Rocker arm actuator position sensor A, bank 2 - circuit range/performance	Wiring, rocker arm actuator position sensor, ECM
P266C	"A" Rocker Arm Actuator Position Sensor Circuit Low Bank 2	-
P266D	Rocker arm actuator position sensor A, bank 2 - circuit high	Wiring, rocker arm actuator position sensor, ECM
P266E	Rocker arm actuator position sensor A, bank 2 - circuit intermittent/erratic	Wiring, rocker arm actuator position sensor, ECM
P266F	ISO/SAE Reserved	-
P2670	Actuator supply voltage B - circuit low	Wiring short to ground, ECM
P2671	Actuator supply voltage B - circuit high	Wiring short to positive, ECM
P2672	Injection Pump Timing Offset	-
P2673	Injection Pump Timing Calibration Not Learned	-
P2674	Injection Pump Fuel Calibration Not Learned	-
P2675	Air Cleaner Inlet Control Circuit/Open	-
P2676	Air Cleaner Inlet Control Circuit Low	-
P2677	Air Cleaner Inlet Control Circuit High	-
P2678	Coolant Degassing Valve Control Circuit/Open	-
P2679	Coolant Degassing Valve Control Circuit Low	-
P267A	Rocker arm actuator position sensor B, bank 2 - circuit malfunction	Wiring, rocker arm actuator position sensor, ECM
P267B	Rocker arm actuator position sensor B, bank 2 - circuit range/performance	Wiring, rocker arm actuator position sensor, ECM
P267C	Rocker arm actuator position sensor B, bank 2 - circuit low	Wiring, rocker arm actuator position sensor, ECM
P267D	Rocker arm actuator position sensor B, bank 2 - circuit high	Wiring, rocker arm actuator position sensor, ECM
P267E	Rocker arm actuator position sensor B, bank 2- circuit intermittent/erratic	Wiring, rocker arm actuator position sensor, ECM
P267F	ISO/SAE Reserved	-
P2680	Coolant Degassing Valve Control Circuit High	-
P2681	Engine Coolant Bypass Valve Control Circuit/Open	-
P2682	Engine Coolant Bypass Valve Control Circuit Low	-
P2683	Engine Coolant Bypass Valve Control Circuit High	-
P2684	Actuator Supply Voltage "C" Circuit/Open	-
P2685	Actuator Supply Voltage "C" Circuit Low	-
P2686	Actuator Supply Voltage "C" Circuit High	-
P2687	Fuel Supply Heater Control Circuit/Open	-
P2688	Fuel Supply Heater Control Circuit Low	-
P2689	Fuel Supply Heater Control Circuit High	-
P268A	Injector - calibration not learned/programmed	Calibration not learned
P268B	Fuel high pressure pump- calibration not learned/programmed	Calibration not learned
P268C	Injector 1 - data incompatible	Wiring, injector, ECM
P268D	Injector 2 - data incompatible	Wiring, injector, ECM
P268E	Injector 3 - data incompatible	Wiring, injector, ECM
P268F	Injector 4 - data incompatible	Wiring, injector, ECM
P2690	Cylinder 5 Injector Data Incompatible	-
P2691	Cylinder 6 Injector Data Incompatible	-
P2692	Cylinder 7 Injector Data Incompatible	-
P2693	Cylinder 8 Injector Data Incompatible	-
P2694	Cylinder 9 Injector Data Incompatible	-
P2695	Cylinder 10 Injector Data Incompatible	-
P2696	Injector Data Incompatible	-
P2697	Exhaust Aftertreatment Fuel Injector "A" Circuit/Open	-
P2698	Exhaust Aftertreatment Fuel Injector "A" Performance	-
P2699	Exhaust Aftertreatment Fuel Injector "A" Circuit Low	-
P269A	Exhaust Aftertreatment Fuel Injector "A" Circuit High	-
P269B	Exhaust Aftertreatment Glow Plug Control Circuit/Open	-
P269C	Exhaust Aftertreatment Glow Plug Control Performance	-
P269D	Exhaust Aftertreatment Glow Plug Control Circuit Low	-
P269E	Exhaust Aftertreatment Glow Plug Control Circuit High	-
P269F	Exhaust Aftertreatment Glow Plug Circuit/Open	-
P26A0	Exhaust Aftertreatment Glow Plug Performance	-
P26A1	Exhaust Aftertreatment Glow Plug Circuit Low	-
P26A2	Exhaust Aftertreatment Glow Plug Circuit High	-
P26A3 – P26FF	ISO/SAE Reserved	-
P26B7	Engine Coolant Bypass Valve 'C' Control Circuit/Open
P2700 – P2799 (Transmission)
P2700	Transmission friction element A, apply time - range/performance problem	Transmission mechanical fault, shift solenoid (SS)
P2701	Transmission friction element B, apply time - range/performance problem	Transmission mechanical fault, shift solenoid (SS)
P2702	Transmission friction element C, apply time - range/performance problem	Transmission mechanical fault, shift solenoid (SS)
P2703	Transmission friction element D, apply time - range/performance problem	Transmission mechanical fault, shift solenoid (SS)
P2704	Transmission friction element E, apply time - range/performance problem	Transmission mechanical fault, shift solenoid (SS)
P2705	Transmission friction element F, apply time - range/performance problem	Transmission mechanical fault, shift solenoid (SS)
P2706	Shift solenoid (SS) F - circuit malfunction	Transmission mechanical fault, shift solenoid (55)
P2707	Shift solenoid (SS) F- performance problem or solenoid stuck off	Transmission mechanical fault, shift solenoid (55)
P2708	Shift solenoid (SS) F - solenoid stuck on	Transmission mechanical fault, shift solenoid (SS)
P2709	Shift solenoid (SS) F -electrical	Wiring, shift solenoid (SS)
P270A	ISO/SAE Reserved	-
P270B	ISO/SAE Reserved	-
P270C	ISO/SAE Reserved	-
P270D	ISO/SAE Reserved	-
P270E	ISO/SAE Reserved	-
P270F	ISO/SAE Reserved	-
P2710	Shift solenoid (SS) F - intermittent	Wiring, poor connection, shift solenoid (55)
P2711	Unexpected mechanical gear disengagement	Operator error, transmission mechanical fault
P2712	Hydraulic power unit leakage	-
P2713	Transmission fluid pressure (TFP) solenoid D - circuit malfunction	Wiring, TFP solenoid, TCM
P2714	Transmission fluid pressure (TFP) solenoid D - performance problem or solenoid stuck off	Wiring, TFP solenoid, transmission mechanical fault
P2715	Transmission fluid pressure (TFP) solenoid D - solenoid stuck on	TFP solenoid, transmission mechanical fault
P2716	Transmission fluid pressure (TFP) solenoid D - electrical	Wiring, TFP solenoid
P2717	Transmission fluid pressure (TFP) solenoid D - circuit intermittent	Wiring, poor connection, TFP solenoid, TCM
P2718	Transmission fluid pressure (TFP) solenoid D - open circuit	Wiring, TFP solenoid, TCM
P2719	Transmission fluid pressure (TFP) solenoid D - range/performance problem	TFP solenoid, transmission mechanical fault
P271A	ISO/SAE Reserved	-
P271B	ISO/SAE Reserved	-
P271C	ISO/SAE Reserved	-
P271D	ISO/SAE Reserved	-
P271E	ISO/SAE Reserved	-
P271F	ISO/SAE Reserved	-
P2720	Transmission fluid pressure (TFP) solenoid D - circuit low	Wiring short to ground, TFP solenoid, TCM
P2721	Transmission fluid pressure (TFP) solenoid D - circuit high	Wiring short to positive, TFP solenoid, TCM
P2722	Transmission fluid pressure (TFP) solenoid E - circuit malfunction	Wiring, TFP solenoid, TCM
P2723	Transmission fluid pressure (TFP) solenoid E - performance problem or solenoid stuck off	Wiring, TFP solenoid, transmission mechanical fault
P2724	Transmission fluid pressure (TFP) solenoid E - solenoid stuck on	TFP solenoid, transmission mechanical fault
P2725	Transmission fluid pressure (TFP) solenoid E - electrical	Wiring, TFP solenoid
P2726	Transmission fluid pressure (TFP) solenoid E - circuit intermittent	Wiring, poor connection, TFP solenoid, TCM
P2727	Transmission fluid pressure (TFP) solenoid E - open circuit	Wiring, TFP solenoid, TCM
P2728	Transmission fluid pressure (TFP) solenoid E - range/performance problem	TFP solenoid, transmission mechanical fault
P2729	Transmission fluid pressure (TFP) solenoid E - circuit low	Wiring short to ground, TFP solenoid, TCM
P272A	ISO/SAE Reserved	-
P272B	ISO/SAE Reserved	-
P272C	ISO/SAE Reserved	-
P272D	ISO/SAE Reserved	-
P272E	ISO/SAE Reserved	-
P272F	ISO/SAE Reserved	-
P2730	Transmission fluid pressure (TFP) solenoid E - circuit high	Wiring short to positive, TFP solenoid, TCM
P2731	Transmission fluid pressure (TFP) solenoid F - circuit malfunction	Wiring, TFP solenoid, TCM
P2732	Transmission fluid pressure (TFP) solenoid F - performance problem or solenoid stuck off	Wiring, TFP solenoid, transmission mechanical fault
P2733	Transmission fluid pressure (TFP) solenoid F - solenoid stuck on	TFP solenoid, transmission mechanical fault
P2734	Transmission fluid pressure (TFP) solenoid F - electrical	Wiring, TFP solenoid
P2735	Transmission fluid pressure (TFP) solenoid F - circuit intermittent	Wiring, poor connection, TFP solenoid, TCM
P2736	Transmission fluid pressure (TFP) solenoid F - open circuit	Wiring, TFP solenoid, TCM
P2737	Transmission fluid pressure (TFP) solenoid F - range/performance problem	TFP solenoid, transmission mechanical fault
P2738	Transmission fluid pressure (TFP) solenoid F - circuit low	Wiring short to ground, TFP solenoid, TCM
P2739	Transmission fluid pressure (TFP) solenoid F - circuit high	Wiring short to positive, TFP solenoid, TCM
P273A	Transmission friction element G, apply time - range/performance problem	Shift solenoid (SS), transmission mechanical fault, TCM, ECM
P273B	Transmission friction element H, apply time- range/performance problem	Shift solenoid (SS), transmission mechanical fault, TCM, ECM
P273C	ISO/SAE Reserved	-
P273D	ISO/SAE Reserved	-
P273E	ISO/SAE Reserved	-
P273F	ISO/SAE Reserved	-
P2740	Transmission fluid temperature (TFT) sensor B - circuit malfunction	Wiring, TFT sensor
P2741	Transmission fluid temperature (TFT) sensor B - circuit range/performance problem	Wiring, TFT sensor
P2742	Transmission fluid temperature (TFT) sensor B - circuit low	Wiring short to ground, TFT sensor
P2743	Transmission fluid temperature (TFT) sensor B - circuit high	Wiring short to positive, TFT sensor
P2744	Transmission fluid temperature (TFT) sensor B - circuit intermittent	Wiring, poor connection, TFT sensor
P2745	Transmission intermediate shaft speed sensor B - circuit malfunction	Wiring, transmission intermediate shaft speed sensor, ECM, TCM
P2746	Transmission intermediate shaft speed sensor B- range/performance problem	Wiring, transmission intermediate shaft speed sensor, ECM, TCM
P2747	Transmission intermediate shaft speed sensor B- no signal	Wiring, transmission intermediate shaft speed sensor, ECM, TCM
P2748	Transmission intermediate shaft speed sensor B- circuit intermittent	Wiring, poor connection, transmission intermediate shaft speed sensor, ECM, TCM
P2749	Transmission intermediate shaft speed sensor C - circuit malfunction	Wiring, transmission intermediate shaft speed sensor, ECM, TCM
P274A	ISO/SAE Reserved	-
P274B	ISO/SAE Reserved	-
P274C	ISO/SAE Reserved	-
P274D	ISO/SAE Reserved	-
P274E	ISO/SAE Reserved	-
P274F	ISO/SAE Reserved	-
P2750	Transmission intermediate shaft speed sensor C - range/performance problem	Wiring, transmission intermediate shaft speed sensor, ECM, TCM
P2751	Transmission intermediate shaft speed sensor C - no signal	Wiring, transmission intermediate shaft speed sensor, ECM, TCM
P2752	Transmission intermediate shaft speed sensor C - circuit intermittent	Wiring, poor connection, transmission intermediate shaft speed sensor, ECM, TCM
P2753	Transmission fluid cooler- open circuit	Wiring, transmission fluid cooler
P2754	Transmission fluid cooler - circuit low	Wiring short to ground, transmission fluid cooler
P2755	Transmission fluid cooler - circuit high	Wiring short to positive, transmission fluid cooler
P2756	Torque converter clutch (TCC) pressure control solenoid - circuit malfunction	Wiring, TCC pressure control solenoid
P2757	Torque converter clutch {TCC) pressure control solenoid - performance problem or solenoid stuck off	TCC pressure control solenoid
P2758	Torque converter clutch (TCC) pressure control solenoid - solenoid stuck on	TCC pressure control solenoid
P2759	Torque converter clutch (TCC) pressure control solenoid - electrical fault	Wiring, TCC pressure control solenoid
P275A	ISO/SAE Reserved	-
P275B	ISO/SAE Reserved	-
P275C	ISO/SAE Reserved	-
P275D	ISO/SAE Reserved	-
P275E	ISO/SAE Reserved	-
P275F	ISO/SAE Reserved	-
P2760	Torque converter clutch (TCC) pressure control solenoid - circuit intermittent	Wiring, poor connection, TCC pressure control solenoid
P2761	Torque converter clutch {TCC) pressure control solenoid - open circuit	Wiring, TCC pressure control solenoid
P2762	Torque converter clutch {TCC) pressure control solenoid - range/performance problem	Wiring, TCC pressure control solenoid
P2763	Torque converter clutch (TCC) pressure control solenoid - circuit high	Wiring short to positive, TCC pressure control solenoid
P2764	Torque converter clutch (TCC) pressure control solenoid - circuit low	Wiring short to ground, TCC pressure control solenoid
P2765	Transmission input·shaft speed sensor/turbine shaft speed (TSS) sensor B - circuit malfunction	Wiring, transmission input shaft speed sensor/ TSS sensor
P2766	Transmission input shaft speed sensor/turbine shaft speed (TSS) sensor B - range/performance problem	Wiring, transmission input shaft speed sensor/ TSS sensor
P2767	Transmission input shaft speed sensor/turbine shaft speed (TSS) sensor 8 - no signal	Wiring, transmission input shaft speed sensor/ TSS sensor
P2768	Transmission input shaft speed sensor/turbine shaft speed (TSS) sensor 8 - circuit intermittent	Wiring, poor connection, transmission input shaft speed sensorrrss sensor
P2769	Torque converter clutch (TCC) - circuit low	Wiring short to ground, TCC
P276A	ISO/SAE Reserved	-
P276B	ISO/SAE Reserved	-
P276C	ISO/SAE Reserved	-
P276D	ISO/SAE Reserved	-
P276E	ISO/SAE Reserved	-
P276F	ISO/SAE Reserved	-
P2770	Torque converter clutch (TCC) -circuit high	Wiring short to positive, TCC
P2771	Four wheel drive, low gear ratio switch - circuit malfunction	Wiring, low gear ratio switch
P2772	Four wheel drive, low gear ratio switch - range/performance problem	Wiring, low gear ratio switch
P2773	Four wheel drive, low gear ratio switch - circuit low	Wiring short to ground, low gear ratio switch
P2774	Four wheel drive, low gear ratio switch - circuit high	Wiring short to positive, low gear ratio switch
P2775	Transmission gear selection switch, upshift - range/performance problem	Wiring, transmission gear selection switch
P2776	Transmission gear selection switch, upshift- circuit low	Wiring short to ground, transmission gear selection switch
P2777	Transmission gear selection switch, upshift- circuit high	Wiring short to positive, transmission gear selection switch
P2778	Transmission gear selection switch, upshift - circuit intermittent/erratic	Wiring, poor connection, transmission gear selection switch
P2779	Transmission gear selection switch, downshift- range/performance problem	Wiring, transmission gear selection switch
P277A	ISO/SAE Reserved	-
P277B	ISO/SAE Reserved	-
P277C	ISO/SAE Reserved	-
P277D	ISO/SAE Reserved	-
P277E	ISO/SAE Reserved	-
P277F	ISO/SAE Reserved	-
P2780	Transmission gear selection switch, downshift- circuit low	Wiring short to ground, transmission gear selection switch
P2781	Transmission gear selection switch, downshift- circuit high	Wiring short to positive, transmission gear selection switch
P2782	Transmission gear selection switch, downshift - circuit intermittent/erratic	Wiring, poor connection, transmission gear selection switch
P2783	Torque converter - temperature too high	Transmission fluid level low, transmission mechanical fault, TCC slipping
P2784	Transmission input shaft speed sensor/turbine shaft speed (TSS) sensor A/8- correlation	Wiring, transmission input shaft speed sensor/ TSS sensor
P2785	Clutch actuator - temperature too high	-
P2786	Gear shift actuator - temperature too high	-
P2787	Clutch - temperature too high	Clutch slipping
P2788	Auto shift manual (ASM) transmission, adaptive learning - at limit	-
P2789	Clutch, adaptive learning - at limit	-
P278A	Transmission kick-down switch - circuit malfunction	Wiring, transmission kick-down switch, TCM, ECM
P278B	Transmission kick-down switch - circuit range/performance	Wiring, transmission kick-down switch, TCM, ECM
P278C	Transmission kick-down switch - circuit low	Wiring, transmission kick-down switch, TCM, ECM
P278D	Transmission kick-down switch - circuit high	Wiring, transmission kick-down switch, TCM, ECM
P278E	Transmission kick-down switch - circuit intermittent/erratic	Wiring, transmission kick-down switch, TCM, ECM
P278F	Clutch "B" Adaptive Learning at Limit	-
P2790	Gate select direction - circuit malfunction	Wiring
P2791	Gate select direction - circuit low	Wiring short to ground
P2792	Gate select direction - circuit high	Wiring short to positive
P2793	Gear shift direction - circuit malfunction	Wiring
P2794	Gear shift direction - circuit low	Wiring short to ground
P2795	Gear shift direction - circuit high	Wiring short to positive
P2796	Auxiliary Transmission Fluid Pump Control Circuit/Open	-
P2797	Auxiliary Transmission Fluid Pump Performance	-
P2798	Auxiliary Transmission Fluid Pump Control Circuit Low	-
P2799	Auxiliary Transmission Fluid Pump Control Circuit High	-
P279A	Transfer Case Gear High Incorrect Ratio	-
P279B	Transfer Case Gear Low Incorrect Ratio	-
P279C	Transfer Case Gear Neutral Incorrect Ratio	-
P279D	Four Wheel Drive (4WD) Range Signal Circuit	-
P279E	Four Wheel Drive (4WD) Range Signal Circuit Range/Performance	-
P279F	Four Wheel Drive (4WD) Range Signal Circuit Low	-
P27A0	Four Wheel Drive (4WD) Range Signal Circuit High	-
P27A1 – P27FF	ISO/SAE Reserved	-
P2800 – P2899 (Transmission)
P2800	Transmission Range Sensor "B" Circuit (PRNDL Input)	-
P2801	Transmission Range Sensor "B" Circuit Range/Performance	-
P2802	Transmission Range Sensor "B" Circuit Low	-
P2803	Transmission Range Sensor "B" Circuit High	-
P2804	Transmission Range Sensor "B" Circuit Intermittent	-
P2805	Transmission Range Sensor "A"/"B" Correlation	-
P2806	Transmission Range Sensor Alignment	-
P2807	Pressure Control Solenoid "G"	-
P2808	Pressure Control Solenoid "G" Performance/Stuck Off	-
P2809	Pressure Control Solenoid "G" Stuck On	-
P280A	Transmission Range Sensor "A" Circuit Not Learned	-
P280B	Transmission Range Sensor "B" Circuit Not Learned	-
P280C	ISO/SAE Reserved	-
P280D	ISO/SAE Reserved	-
P280E	ISO/SAE Reserved	-
P280F	ISO/SAE Reserved	-
P2810	Pressure Control Solenoid "G" Electrical	-
P2811	Pressure Control Solenoid "G" Intermittent	-
P2812	Pressure Control Solenoid "G" Control Circuit/Open	-
P2813	Pressure Control Solenoid "G" Control Circuit Range/Performance	-
P2814	Pressure Control Solenoid "G" Control Circuit Low	-
P2815	Pressure Control Solenoid "G" Control Circuit High	-
P2816	Pressure Control Solenoid "H"	-
P2817	Pressure Control Solenoid "H" Performance/Stuck Off	-
P2818	Pressure Control Solenoid "H" Stuck On	-
P2819	Pressure Control Solenoid "H" Electrical	-
P281A	Transmission fluid pressure (TFP) solenoid H - intermittent	Wiring, TFP solenoid, ECM
P281B	Transmission fluid pressure (TFP) solenoid H - control circuit open	Wiring, TFP solenoid, ECM
P281C	Transmission fluid pressure {TFP) solenoid H - control circuit range/performance	Wiring, TFP solenoid, ECM
P281D	Transmission fluid pressure (TFP) solenoid H - control circuit low	Wiring, TFP solenoid, ECM
P281E	Transmission fluid pressure (TFP) solenoid H - control circuit high	Wiring, TFP solenoid, ECM
P281F	Transmission fluid pressure {TFP) solenoid J - malfunction	Wiring, TFP solenoid, ECM
P2820	Pressure Control Solenoid "J" Performance/Stuck Off	-
P2821	Pressure Control Solenoid "J" Stuck On	-
P2822	Pressure Control Solenoid "J" Electrical	-
P2823	Pressure Control Solenoid "J" Intermittent	-
P2824	Pressure Control Solenoid "J" Control Circuit/Open	-
P2825	Pressure Control Solenoid "J" Control Circuit Range/Performance	-
P2826	Pressure Control Solenoid "J" Control Circuit Low	-
P2827	Pressure Control Solenoid "J" Control Circuit High	-
P2828	Pressure Control Solenoid "K"	-
P2829	Pressure Control Solenoid "K" Performance/Stuck Off	-
P282A	Transmission fluid pressure {TFP) solenoid K - solenoid stuck on	Wiring, TFP solenoid, transmission mechanical fault, ECM
P282B	Transmission fluid pressure (TFP) solenoid K - electrical	Wiring, TFP solenoid, ECM
P282C	Transmission fluid pressure (TFP) solenoid K - intermittent	Wiring, TFP solenoid, ECM
P282D	Transmission fluid pressure {TFP) solenoid K - control circuit open	Wiring, TFP solenoid, ECM
P282E	Transmission fluid pressure (TFP) solenoid K - control circuit range/performance	Wiring, TFP solenoid, ECM
P282F	Transmission fluid pressure {TFP) solenoid K - control circuit low	Wiring, TFP solenoid, ECM
P2830	Pressure Control Solenoid "K" Control Circuit High	-
P2831	Shift Fork "A" Position Circuit	-
P2832	Shift Fork "A" Position Circuit Range/Performance	-
P2833	Shift Fork "A" Position Circuit Low	-
P2834	Shift Fork "A" Position Circuit High	-
P2835	Shift Fork "A" Position Circuit Intermittent	-
P2836	Shift Fork "B" Position Circuit	-
P2837	Shift Fork "B" Position Circuit Range/Performance	-
P2838	Shift Fork "B" Position Circuit Low	-
P2839	Shift Fork "B" Position Circuit High	-
P283A	Shift Fork "B" Position Circuit Intermittent	-
P283B	Shift Fork "C" Position Circuit	-
P283C	Shift Fork "C" Position Circuit Range/Performance	-
P283D	Shift Fork "C" Position Circuit Low	-
P283E	Shift Fork "C" Position Circuit High	-
P283F	Shift Fork "C" Position Circuit Intermittent	-
P2840	Shift Fork "D" Position Circuit	-
P2841	Shift Fork "D" Position Circuit Range/Performance	-
P2842	Shift Fork "D" Position Circuit Low	-
P2843	Shift Fork "D" Position Circuit High	-
P2844	Shift Fork "D" Position Circuit Intermittent	-
P2845	Shift Fork "A" Position Sensor Incorrect Neutral Position Indicated	-
P2846	Shift Fork "B" Position Sensor Incorrect Neutral Position Indicated	-
P2847	Shift Fork "C" Position Sensor Incorrect Neutral Position Indicated	-
P2848	Shift Fork "D" Position Sensor Incorrect Neutral Position Indicated	-
P2849	Shift Fork "A" Stuck	-
P284A	Shift Fork "B" Stuck	-
P284B	Shift Fork "C" Stuck	-
P284C	Shift Fork "D" Stuck	-
P284D	Shift Fork "A" Unrequested Movement	-
P284E	Shift Fork "B" Unrequested Movement	-
P284F	Shift Fork "C" Unrequested Movement	-
P2850	Shift Fork "D" Unrequested Movement	-
P2851	Shift Fork Position Sensor "A"/"B" Correlation	-
P2852	Shift Fork Position Sensor "C"/"D" Correlation	-
P2853	Clutch "A" Pressure Discharge Performance	-
P2854	Clutch "B" Pressure Discharge Performance	-
P2855	Clutch "A" Pressure Charge Performance	-
P2856	Clutch "B" Pressure Charge Performance	-
P2857	Clutch "A" Pressure Engagement Performance	-
P2858	Clutch "B" Pressure Engagement Performance	-
P2859	Clutch "A" Pressure Disengagement Performance	-
P285A	Clutch "B" Pressure Disengagement Performance	-
P285B – P28FF	ISO/SAE Reserved	-
P2900 – P2999 (Transmission)
P2900	ISO/SAE Reserved	-
P2999	ISO/SAE Reserved
P2A00 – P2A99 (Fuel and Air Metering)
P2A00	Heated oxygen sensor (H02S) 1, bank 1 - range/performance problem	Intake/exhaust leak, fuel pressure, wiring, H025
P2A01	Heated oxygen sensor (H028) 2, bank 1 - range/performance problem	Intake/exhaust leak, fuel pressure, wiring, H025
P2A02	Heated oxygen sensor (H02S) 3, bank 1 - range/performance problem	Intake/exhaust leak, fuel pressure, wiring, H025
P2A03	Heated oxygen sensor (H028) 1, bank 2- range/performance problem	Intake/exhaust leak, fuel pressure,wiring,H02S
P2A04	Heated oxygen sensor (H028) 2, bank 2 - range/performance problem	Intake/exhaust leak, fuel pressure, wiring, H02S
P2A05	Heated oxygen sensor (H02S) 3, bank 2 - range/performance problem	Intake/exhaust leak, fuel pressure, wiring, H025
P2A06	Heated oxygen sensor (H028) 1, bank 1 - circuit negative voltage	Wiring, H025, ECM
P2A07	Heated oxygen sensor (H02S) 2, bank 1 - circuit negative voltage	Wiring, H025, ECM
P2A08	Heated oxygen sensor (H02S) 3, bank 1 - circuit negative voltage	Wiring, H025, ECM
P2A09	Heated oxygen sensor (H028) 1, bank 2 - circuit negative voltage	Wiring, H025, ECM
P2A0A	ISO/SAE Reserved	-
P2A0B	ISO/SAE Reserved	-
P2A0C	ISO/SAE Reserved	-
P2A0D	ISO/SAE Reserved	-
P2A0E	ISO/SAE Reserved	-
P2A0F	ISO/SAE Reserved	-
P2A10	Heated oxygen sensor (H02S) 2. bank 2 - circuit negative voltage	Wiring, H02S, ECM
P2A11	Heated oxygen sensor (H02S) 3, bank 2 - circuit negative voltage	Wiring, H02S, ECM
P2A12 – P2AFF	ISO/SAE Reserved	-
P2B00 – P2BA6	ISO/SAE Reserved	-
P2BA7	NOx Exceedence - Empty Reagent Tank	-
P2BA8	NOx Exceedence - Interruption of Reagent Dosing Activity	-
P2BA9	NOx Exceedence - Insufficient Reagent Quality	-
P2BAA	NOx Exceedence - Low Reagent Consumption	-
P2BAB	NOx Exceedence - Incorrect EGR Flow	-
P2BAC	NOx Exceedence - Deactivation of EGR	-
P2BAD	NOx Exceedence - Root Cause Unknown	-
P2BAE	NOx Exceedence - NOx control monitoring system	-
P2BAF – P2BFF	ISO/SAE Reserved	-
P2C00 – P2C99 (ISO/SAE Reserved)
P2C00	ISO/SAE Reserved	-
P2D00 – P2D99 (ISO/SAE Reserved)
P2D00	ISO/SAE Reserved	-
P2E00 – P2E99 (ISO/SAE Reserved)
P2E00	ISO/SAE Reserved	-
P2F00 – P2F99 (ISO/SAE Reserved)
P2F00	ISO/SAE Reserved	-