OBDII Mercury 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.

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Mercury Codes
Trouble CodeFault LocationProbable Cause
P1000 – P1099 (Fuel and air metering and auxiliary emission control)
P1000System readiness test not complete
P1100 – P1199 (Fuel and air metering)
P1100Mass air flow (MAF) sensor -circuit intermittentWiring, MAF sensor
P1101Mass air flow (MAF) sensor -signal malfunctionWiring, battery, MAF sensor, ECM
P1102Mass Air Flow Sensor In Range But Lower Than Expected
P1105Manifold absolute pressure (MAP) sensor/ barometric pressure (BARO) sensorWiring, MAP/BARO sensor switch solenoid, hose connection(s), MAP sensorl BARO sensor
P1106Manifold Absolute Pressure Sensor Circuit Intermittent High Voltage
P1107Dual Alternator Lower Circuit Malfunction
P1112Intake air temperature (IAT) -circuit intermittentWiring, IAT sensor, ECM
P1114Intake air temperature (IAT) sensor 2 -low inputWiring short circuit to ground, IAT sensor, ECM
P1115Intake air temperature (IAT) sensor 2 -high inputWiring, IAT sensor, ECM
P1116Engine coolant temperature (ECT) sensor/cylinder head temperature (CHT) sensorout of self-test rangeWiring, cooling system fault, ECT sensor, CHT sensor, ECM
P1117Engine coolant temperature (ECT)sensor/cylinder head temperature (CHT) sensorcircuit intermittentWiring, cooling system fault, ECT sensor, CHT sensor, ECM
P1120Throttle position (TP) sensor -signal malfunction, lowWiring, TP sensor
P1121Throttle position (TP) sensor inconsistent with mass air flow (MAF) sensor signalWiring, MAF sensor, TP sensor, air leak
P1123Throttle Position Sensor Circuit Intermittent High Voltage
P1124Throttle position (TP) sensor -signal malfunctionMechanical fault, TP sensor, ECM
P1125Throttle position (TP) sensor -circuit intermittentWiring, TP sensor
P1127Self-test not completed -heated oxygen sensor(H02S), not testedEngine not running long enough prior to self-test
P1128Heated oxygen sensor (H02S) 1, bank 1/ bank 2 interchangedWiring, connectors swapped
P1129Heated oxygen sensor (H02S) 2, bank 1/ bank 2 -interchangedWiring, connectors swapped
P1130Heated oxygen sensor (H02S) 1, bank 1 -fuel trim (FT), at limitWiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM
P1131Heated oxygen sensor (H02S) 1, bank 1 not switching, fuel trim (FT) weak mixtureWiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM
P1132Heated oxygen sensor (H02S) 1, bank 1 not switching, fuel trim (FT) rich mixtureWiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM
P1133Bank 1 Fuel Control Shifted Lean
P1136Crankshaft Position Sensor And Or Camshaft Position Sensor Input Signal to PCM Concerns
P1137Heated oxygen sensor (H02S) 2, bank 1 not switching, fuel trim (FT) weak mixtureWiring, exhaust system leaking, H02S
P1138Heated oxygen sensor (H02S) 2, bank 1 not switching·, fuel trim (FT) rich mixtureWiring, exhaust system leaking, H02S
P1140Water In Fuel Condition
P1148Fuel trim (FT) -malfunctionWiring, H02S, fuel system, ECM
P1150Heated oxygen sensor (H02S) 1, bank 2 -fuel trim(FT), at limitWiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM
P1151Heated oxygen sensor (H02S) 1, bank 2 not switching, fuel trim (FT) weak mixtureWiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM
P1152Heated oxygen sensor (H02S) 1, bank 2 not switching, fuel trim (FT) rich mixtureWiring, intake/fuel system, H02S, EGR system, oil level, camshaft timing, cylinder compression, ECM
P1156Engine control module (ECM)/fuel injector control module -malfunctionWiring, fuel injector control module, ECM
P1157Heated oxygen sensor (H02S) 2, bank 2 not switching, fuel trim (FT) weak mixtureWiring, exhaust system leaking, H02S
P1158Heated oxygen sensor (H02S) 2, bank 2 not switching, fuel trim (FT) rich mixtureWiring, exhaust system leaking, H02S
P115EEngine control module (ECM) -data transmission faultThrottle position (TP), wiring, ECM
P1168Fuel rail pressure sensor -signal lowWiring, fuel level, low fuel pressure, fuel rail pressure sensor
P1169Fuel rail pressure sensor -signal highWiring, high fuel pressure, fuel rail pressure sensor
P117AEngine control module (ECM) -engine oil temperatureEngine overheated, wiring, ECM
P1180Fuel delivery system -pressure lowFuel filter blocked, fuel supply blocked
P1181Fuel delivery system -pressure highFuel pressure regulator
P1183Engine oil temperature (EOT) sensor -circuitmalfunctionWiring, EOT sensor, ECM
P1184Engine oil temperature (EOT) sensor -out of self-test rangeWiring, EOT sensor, ECM
P1200 – P1299 (Fuel and air metering – injector circuit)
P1217Engine overheatingWiring, ECT sensor, cooling system
P1229Supercharger (SC) intercooler pumpWiring, SC intercooler pump, SC intercooler pump relay, ECM
P1230Low Speed Fuel Pump Fault Condition
P1231High Speed Fuel Pump Relay Activated
P1232Low speed fuel pump -malfunctionWiring, low speed fuel pump relay, ECM
P1233Fuel system -malfunctionWiring, IFS switch, fuel pump, fuel pump control module, ECM
P1234Fuel system -malfunctionWiring, IFS switch, fuel pump, fuel pump control module, ECM
P1235Fuel pump control -signal malfunctionWiring, fuel pump, fuel pump control module, ECM
P1236Fuel pump control -signal malfunctionWiring, fuel pump, fuel pump control module, ECM
P1237Fuel pump -circuit malfunctionWiring, fuel pump, fuel pump relay, fuel pumpcontrol module
P1238Fuel pump -circuit malfunctionWiring, fuel pump, fuel pump relay, fuel pump control module
P1243Second Fuel Pump Faulty Or Ground Fault
P1244Alternator -high inputWiring, alternator, ECM
P1245Alternator -low inputWiring, drive belt, alternator, ECM
P1246AlternatorWiring, alternator, drive belt, ECM
P1250Lack Of Power To Fuel Pressure Regulator Control Solenoid
P1260Theft detected -vehicle immobilized
P1261Injector circuit, cylinder 1 -high to low side shortWiring short circuit
P1262Injector circuit, cylinder 2 -high to low side shortWiring short circuit
P1263Injector circuit, cylinder 3 -high to low side shortWiring short circuit
P1264Injector circuit, cylinder 4 -high to low side shortWiring short circuit
P1265Injector circuit, cylinder 5 -high to low side shortWiring short circuit
P1266Injector circuit, cylinder 6 -high to low side shortWiring short circuit
P1267Injector circuit, cylinder 7 -high to low side shortWiring short circuit
P1268Injector circuit” cylinder 8 -high to low side shortWiring short circuit
P1270Maximum engine RPM or vehicle speed limit reachedEngine over revved in neutral, wheel slippage
P1271Injector circuit, cylinder 1 -high to low side openWiring open circuit
P1272Injector circuit, cylinder 2 -high to low side openWiring open circuit
P1273Injector circuit, cylinder 3 -high to low side openWiring open circuit
P1274Injector circuit, cylinder 4 -high to low side openWiring open circuit
P1275Injector circuit, cylind_er ,5 -high to low side openWiring open circuit
P1276Injector circuit, cylinder 6 -high to low side openWiring open circuit
P1277Injector circuit, cylinder 7 -high to low side openWiring open circuit
P1278Injector circuit, cylinder 8 -high to low side openWiring open circuit
P1285Cylinder head temperature (CHT) sensor overheat conditionWiring, cooling system fault, CHT sensor
P1288Cylinder head temperature (CHT) sensor -out of self-test rangeWiring, cooling system fault, CHT sensor
P1289Cylinder head temperature (CHT) sensor highinputWiring, cooling system fault, CHT sensor
P128AEngine control module (ECM)/cylinder headtemperature (CHT) sensor -high inputWiring, CHT sensor, ECM
P1290Cylinder head temperature (CHT) sensor -low inputWiring, cooling system fault, CHT sensor
P1299Cylinder head temperature (CHT) sensor over temperature conditionWiring, cooling system fault, CHT sensor
P1300 – P1399 (Ignition system or misfire)
P1309Misfire monitor disabledCMP sensor, CKP sensor, ECT sensor, MAFsensor, ECM
P1320Ignition check signal misSingWiring, ignition system, CMP sensor
P1336Crankshaft position (CKP) sensorWiring, flywheel, CKP sensor
P1356Loss Of Ignition Diagnostic Module Input To PCM
P1357Ignition Diagnostic Monitor Pulsewidth Not Defined
P1358Ignition Diagnostic Monitor Signal Out of Self-Test Range
P1359Spark Output Circuit Fault
P1360Ignition Coil 'A' Secondary Circuit Malfunction
P1361Ignition Coil 'B' Secondary Circuit Malfunction
P1362Ignition Coil 'C' Secondary Circuit Malfunction
P1363Ignition Coil 'D' Secondary Circuit Malfunction
P1364Ignition Coil Primary Circuit Fault
P1365Ignition Coil Secondary Circuit Failure
P1380Camshaft position (CMP) actuator, bank 1 circuit malfunctionWiring, CMP actuator, ECM
P1381Camshaft position (CMP) actuator, bank 1 timing over advancedWiring, timing belt/chain, CMP actuator, low oil pressure
P1383Camshaft position (CMP) actuator, bank 1 timing over retardedWiring, timing belt/chain, CMP actuator
P1385Camshaft position (CMP) actuator, bank 2 circuit malfunctionWiring, CMP actuator, ECM
P1386Camshaft position (CMP) actuator, bank 2 timingover advancedWiring, timing belt/chain, CMP actuator, low oil pressure
P1388Camshaft position (CMP) actuator, bank 2 timingover retardedWiring, timing belt/chain, CMP actuator
P1390Octane adjustmentOctane adjustment connector, ECM
P1397System voltage -out of self-test rangeWiring, battery, alternator
P1400 – P1499 (Emission control)
P1400Exhaust gas recirculation (EGR) pressure sensor circuit malfunction, low inputWiring, EGR pressure sensor, ECM
P1401Exhaust gas recirculation (EGR) temperature sensorWiring, EGR temperature sensor
P1402Exhaust gas recirculation (EGR) system -high flow rateWiring, EGR hose(s), EGR valve, ECM
P1403Differential Pressure Feedback Electronic Sensor Hoses Reversed
P1405Exhaust gas recirculation (EGR) system -upstream hose off or pluggedEGR hoses
P1406Exhaust gas recirculation (EGR) system -downstream hose off or blockedEGR hoses
P1407Exhaust Gas Recirculation Flow Out Of Self-Test Range
P1408Exhaust gas recirculation (EGR) system -out of self-test rangeWiring, EGR hoses, EGR valve, EGR solenoid,ECM
P1409Exhaust gas recirculation (EGR) solenoid -circuit malfunctionWiring, EGR solenoid, ECM
P1411Secondary air injection (AIR) system malfunctionAIR hoses, AIR pump, AIR solenoid
P1413Secondary air injection monitor circuit -low inputWiring, AIR solenoid, AIR pump, ECM
P1414Secondary air injection monitor circuit -high inputWiring, AIR solenoid, ECM
P1420Catalyst Temperature Sensor
P1421Catalyst Damage
P1422Exhaust Gas Ignition Temperature Sensor
P1432Engine thermostat heater -circuit malfunctionWiring, engine thermostat heater, ECM
P1436AlC evaporator temperature sensor -low inputWiring, AlC evaporator temperature sensor, ECM
P1437AlC evaporator temperature sensor -high inputWiring, AlC evaporator temperature sensor, ECM
P1440Evaporative emission (EVAP) system -small leak detectedHose connection(s), fuel filler cap, EVAP canister, EVAP pressure sensor, MAP sensor/BARO sensor, fuel tank vent valve
P1442EVAP System Small Leak Detected
P1443Evaporative emission (EVAP) system malfunctionWiring, EVAP system hoses, EVAP canister, EVAP canister purge valve
P1444Evaporative emission (EVAP) system -low inputWiring, EVAP pressure sensor, ECM
P1445Purge Flow Sensor Circuit High Condition
P1446Evaporative emission (EVAP) canister purge valve -remains closedWiring, EVAP pressure sensor, EVAP canister purge valve
P1447Evaporative emission (EVAP) system -malfunction/leak detectedWiring, EVAP canister purge valve, EVAP pressure sensor, EVAP canister, CTP switch, hoses blockedlleaking
P1448Evaporative emission (EVAP) canister purge valve -remains openWiring, EVAP pressure sensor, EVAP canister purge valve
P1450Evaporative emission (EVAP) system, ventcontrol -circuit malfunctionWiring, EVAP system hoses, EVAP canister purge valve, fuel filler cap blocked
P1451Evaporative emission (EVAP) canister purge valve -circuit malfunctionWiring, EVAP canister purge valve, ECM
P1455Evaporative Emission Control System Gross Leak Detected
P145EPositive crankcase ventilation (PCV) heater circuit malfunctionWiring, PCV valve
P1460Wide open throttle (WOT) relay, AlC -circuit malfunctionWiring, WOT relay, ECM
P1461AlC refrigerant pressure sensor -high voltageWiring, AlC refrigerant pressure sensor, ECM
P1462AlC refrigerant pressure sensor -low voltageWiring, AlC refrigerant pressure sensor, ECM
P1463AlC refrigerant pressure sensor -insufficient pressure changeWiring, AlC system -mechanical fault, AlC refrigerant pressure sensor, AlC compressor clutch
P1464AlC demand -signal out of self-test rangeWiring, AlC ON -during self-test, WOT relay (AICcut-out), ECM
P1465Air Conditioning Relay Circuit Malfunction
P1466A/C Refrigerant Temperature Sensor/Circuit Malfunction
P1469Frequent AlC compressor clutch cyclingWiring, AlC system -mechanical fault
P1473Fan Secondary High With Fans Off
P1474Engine coolant blower motor (low speed) -control circuit malfunctionWiring, engine coolant blower motor relay, ECM
P1477Engine coolant blower motor (medium speed) -control circuit malfunctionWiring, engine coolant blower motor relay, ECM
P1479Engine coolant blower motor (high speed) -control circuit malfunctionWiring, engine coolant blower motor relay, ECM
P1489Crankcase breather heater -circuit malfunctionWiring, crankcase breather heater
P1490Evaporative emission (EVAP) canister purge valve bypass solenoidWiring, EVAP canister purge valve bypass solenoid
P1491Evaporative emission (EVAP) canister purge valve bypass solenoid -malfunctionWiring, EVAP canister, vacuum hoses, EVAP pressure sensor, EVAP canister purge valve bypass solenoid
P1492Evaporative emission (EVAP) canister purge valve -circuit malfunctionWiring, EVAP canister purge valve
P1493Evaporative emission (EVAP) canister purge valve -malfunction, stuck openEVAP canister purge valve, vacuum hose(s), EVAP pressure sensor, EVAP canister vent valve
P1500 – P1599 (Vehicle or idle speed control)
P1500Vehicle speed sensor (VSS) -circuit intermittentWiring, VSS, ECM
P1501Vehicle speed sensor (VSS) -out of self-testrangeElectro-magnetic interference
P1502Vehicle speed sensor (VSS) -intermittent signalWiring, VSS/ABS wheel speed sensors
P1504Idle air control (lAC) valve -circuit malfunctionWiring, lAC valve, ECM
P1505Idle Air Control System at Adaptive Clip
P1506Idle air control (lAC) valve -over-speed errorWiring, lAC valve, vacuum leaks, ECM
P1507Idle air control (lAC) valve -under-speed errorWiring, lAC valve, hose blocked, ECM
P1512Intake manifold runner control (IMRC) module -malfunction, stuck closed (bank 1)Wiring, mechanical fault, ECM
P1513Intake manifold runner control (IMRC) module -malfunction, stuck closed (bank 2)Wiring, mechanical fault, ECM
P1516Intake manifold runner control (IMRC) module -input error (bank 1)Wiring, mechanical fault
P1517Intake manifold runner control (IMRC) module -input error (bank 2)Wiring, mechanical fault
P1518Intake manifold runner control (IMRC) module -malfunction, stuck openWiring, IMRC actuator, ECM
P1519Intake manifold runner control (IMRC) module -malfunction, stuck closedWiring, IMRC actuator, ECM
P151AIntake manifold runner control (IMRC) module -malfunctionWiring, IMRC actuator, ECM
P1520Intake manifold runner control (IMRC) module -circuit malfunctionWiring, mechanical fault, vacuum hoses, IMRC actuator, ECM
P1537Intake manifold runner control (IMRC) module -malfunction, stuck open (bank 1)Wiring, hoses blocked, mechanical fault, ECM
P1538Intake manifold runner control (IMRC) module -malfunction, stuck open (bank 2)Wiring, hoses blocked, mechanical fault, ECM
P1548Engine Air Filter Restriction
P1549Intake manifold air control system malfunctionWiring, intake manifold air control solenoid, ECM
P1550Power steering pressure (PSP) sensormalfunctionWiring, PSP sensor, ECM
P1561Brake Line Pressure Sensor Circuit
P1565Cruise control systemWiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS
P1566Cruise control systemWiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS
P1567Cruise control systemWiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS
P1568Cruise control systemWiring, CPP switch, BPP switch, cruise control module, cruise control master switch, VSS
P1572Brake pedal position (BPP) switch -circuit intermittentWiring, BPP switch, brake fluid pressure (BFP) switch, ECM
P1575Pedal Position Out of Self Test Range
P1576Accelerator Pedal Position Sensor Signal Malfunction
P1582Engine control module (ECM) -throttle data storedAirbag deployment
P1588Throttle Control Unit Detected Loss of Return Spring
P1600 – P1699 (ECM – computer output circuit)
P1605Engine control module (ECM)/transmission control module (T<;:M) communication errorWiring, battery, TCM, ECM
P1633‘Keep alive’ power supply -voltage too lowWiring, ECM
P1635Tire/axle ratio out of rangeIncorrect tire size, incorrect axle ratio, incorrect vehicle 10 configuration
P1636Engine control module (ECM) -intemal faultECM
P1639Engine control module (ECM) -invalid or missing dataIncorrect vehicle 10 configuration, ECM
P1640Diagnostic trouble codes storedP-codes stored in another control module
P1641Fuel pump -circuit malfunctionWiring, fuel pump relay, fuel pump, ECM
P1646Engine control module (ECM) -linear oxygen sensor (02S) control, bank 1Non OEM accessories, ECM programming, ECM
P1647Engine control module (ECM) -linear oxygen sensor (02S) control, bank 2Non OEM accessories, ECM programming, ECM
P1650Power steering pressure (PSP) switch -malfunctionWiring, PSP switch, steering wheel turned during self-test, ECM
P1651Power steering pressure (PSP) switch -inputWiring, vehicle towed with engine running, PSP switch, OlC not erased, ECM
P1674Engine control module (ECM) -malfunctionWiring, software incompatibility, ECM
P1700 – P1799 (Transmission)
P1700Transmission System Problems
P1701Fuel trim (FT) -malfunctionIntake leak, AIR system, fuel pressure/pump, injector(s), EGR system, H02S
P1703Brake pedal position (BPP) switch -out of self-test rangeWiring, brake pedal depressed during self-test, rear electronic modulellights control module, BPP switch, ECM
P1705Throttle position (TP) switch/sensorWiring, TP switch, TCM, ECM
P1706Transmission range (TR) switch/park/neutralposition (PNP) switch -malfunctionWiring, TR switch/PNP switch, TCM
P1709Park/neutral position (PNP) switch/clutch pedal position (CPP) switch -out of self-test rangeWiring, PNP switch/CPP switch, ECM
P1714Shift Solenoid 'A' Fault
P1715Shift Solenoid 'B' Fault
P17294x4L switch -malfunctionWiring, four wheel drive shift control module, ECM
P1743Torque Converter Clutch Solenoid Failed On Conditions
P1744Torque Converter Clutch System Stuck in Off Position
P1760Overdrive clutch solenoid valve -circuit malfunctionWiring, overdrive clutch solenoid valve
P1780Overdrive selection switchWiring, transmission control switch, ECM
P17814x4L switch -out of self-test rangeWiring, four wheel drive shift control module, 4x4L switch, ECM
P1783Transmission Over-Temperature Condition
P1793Ignition Supply Malfunction
P1800 – P1899 (Transmission)
P1804Transmission 4-Wheel Drive High Indicator Circuit Failure
P1806Transmission 4-Wheel Drive High Indicator Short Circuit To Battery
P1807Transmission 4-Wheel Drive High Indicator Short Circuit To Ground
P1808Transmission 4-Wheel Drive Low Indicator Circuit Failure
P1809Transmission 4-Wheel Drive Low Indicator Open Circuit
P1824Transmission 4-Wheel Drive Clutch Relay Circuit Failure
P1828Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure
P1829Transmission Transfer Case Counter Clockwise Shift Relay Coil Open Circuit
P1830Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Battery
P1832Transmission Transfer Case Differential Lock-Up Solenoid Circuit Failure
P1834Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Battery
P1838Transmission Transfer Case Shift Motor Circuit Failure
P1839Transmission Transfer Case Shift Motor Open Circuit
P1840Transmission Transfer Case Shift Motor Short Circuit To Battery
P1852Brake Band Apply Solenoid Low Input Voltage
P1857Transmission Transfer Case Contact Plate 'C' Short Circuit To Ground
P1858Transmission Transfer Case Contact Plate 'D' Circuit Failure
P1859Transmission Transfer Case Contact Plate 'D' Open Circuit
P1862Transmission Transfer Case Contact Plate Power Circuit Failure
P1863Transmission Transfer Case Contact Plate Power Open Circuit
P1866Transmission Transfer Case System Concern Servicing Required
P1867Transmission Transfer Case Contact Plate General Circuit Failure
P1869Lamp Air Bag Warning Indicator Circuit Open or Short to Ground
P1876Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure
P1877Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Short To Battery
P1878Transmission Transfer Case Disengaged Solenoid Circuit Failure
P1881Engine Coolant Level Switch Circuit Failure
P1882Engine Coolant Level Switch Circuit Short to Ground
P1884Engine Coolant Level Lamp Circuit Short to Ground
P1889Drive Train Axles Bearings Problem
P1900 – P1999 (Transmission)
P1900Engine coolant blower motor -circuit malfunctionWiring, engine coolant blower motor relay, engine coolant blower motor
P1901Turbine shaft speed (TSS) sensor -circuitintermittentWiring, poor connection, TSS sensor, ECMfTCM
P1910Reversing lamps -circuit malfunctionWiring, reverse gear position switch, ECM
P1919Engine Coolant Temperature Signal
P1922Fuel Additive Level Circuit Malfunction
P1924Fuel Additive Level Circuit Low
P1925CAN Data Bus TCS/ABS
P1926Fuel Additive Level Circuit Range/Performance
P1927Fuel Additive Level Too Low/Empty
P1928Fuel Additive Level Pump Control Circuit/Open
P1929Fuel Additive Level Pump Control Circuit Performance
P1930Fuel Additive Level Too Low/Empty
P1931Fuel Additive Pump Control Circuit/Open
P1932Fuel Additive Pump Control Circuit Performance
P1934Fuel Additive Pump Control Circuit High
P1935Fuel Additive Level Low
P1936Fuel Level Signal
P1937Vehicle Speed Signal
P1938Brake Switch/Sensor Signal
P1939Clutch Switch/Sensor Signal
U1000 – U2000 (Manufacturer defined, common defination listed)
U1020CAN data bus, NC NC compressor clutch invalid or missing dataWiring, AlC trouble code(s) stored
U1021CAN data bus, AlC -communication errorWiring, AlC trouble code(s) stored, ECM
U1039CAN data bus, antilock brake system (ABS)vehicle speed invalid or missing dataWiring, ABS trouble code(s) stored
U1041CAN data bus, antilock brake system (ABS) vehicle speed invalid or missing dataWiring, ABS trouble code(s) stored
U1051CAN data bus, engine control module (ECM) -brake signal invalid or missing dataWiring, BPP switch, bulb(s)
U1089CAN data bus, active suspension -invalid ormissing dataWiring, active suspension trouble code(s) stored
U1098CAN data bus, antilock brake system (ABS) vehicle speed invalid or missing dataWiring, ABS trouble code(s) stored
U1130CAN data bus, fuel pump -communication errorWiring, instrument panel, ECM
U1131CAN data bus, fuel pump -communication errorWiring, instrument panel, ECM
U1137CAN data bus, instrument panel waming devices -invalid or missing dataWiring, instrument panel
U1147CAN data bus, alarmWiring, alarm system trouble code(s) stored
U1243CAN data bus, AlC -invalid or missing dataWiring, AlC system trouble code(s) stored
U1262CAN data bus -communication errorWiring, trouble code(s) stored in other control modules
U1451CAN data bus, alarmWiring, alarm system trouble code(s) stored
U2000 – U3000 (Manufacturer defined, common defination listed)
U2015Signal link faultCompuvalve/ECM (alternative fuel)
U2195CAN data bus, lights control module -invalid or miSSing dataWiring, lights control module trouble code(s) stored