OBDII Freightliner 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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Freightliner Codes
Trouble Code Fault Location Probable Cause
P1000 – P1099 (Fuel and air metering and auxiliary emission control)
P1000Ignition coil, 5 -primary circuit range/performanceWiring, connectors, ignition coil 5, ECM
P1001Ignition coil, 5 -primary circuit highWiring, connectors, ignition coil 5, ECM
P1002Ignition coil, 5 -primary circuit lowWiring, connectors, ignition coil 5, ECM
P1003Ignition coil, 5 -primary circuit openWiring, connectors, ignition coil 5, ECM
P1004Ignition coil, 5 -primary circuit range/performanceWiring, connectors, ignition coil 5, ECM
P1013Ignition coil, 1 -secondary circuit highWiring, connectors, ignition coil 1, spark plug, ECM
P1014Ignition coil,1 -secondary circuit lowWiring, connectors, ignition coil 1, spark plug, ECM
P1015Ignition coil, 1 -secondary range/performanceWiring, connectors, ignition coil 1, spark plug, ECM
P1016Ignition coil, 1 -secondary circuit openWiring, connectors, ignition coil 1, spark plug,ECM
P1017Ignition coil, 4 -secondary circuit highWiring, connectors, ignition coil 4, spark plug, ECM
P1018Ignition coil, 4 -secondary circuit lowWiring, connectors, ignition coil 4, spark plug,ECM
P1019Ignition coil, 4 -secondary range/performanceWiring, connectors, ignition coil 4, spark plug, ECM
P1023Ignition coil, 3 -secondary range/performanceWiring, connectors, ignition coil 3, spark plug, ECM
P1024Ignition coil, 3 -secondary circuit openWiring, connectors, ignition coil 3, spark plug, ECM
P1025Ignition coil, 6 -secondary circuit highWiring, connectors, ignition coil 6, spark plug,ECM
P1026Ignition coil, 6 -secondary circuit lowWiring, connectors, ignition coil 6, spark plug, ECM
P1027Ignition coil, 6 -secondary range/performanceWiring, connectors, ignition coil 6, spark plug, ECM
P1028Ignition coil, 6 -secondary circuit openWiring, connectors, ignition coil 6, spark plug, ECM
P1029Ignition coil, 2 -secondary circuit highWiring, connectors, ignition coil 2, spark plug,ECM
P1030Ignition coil, 2 -secondary circuit lowWiring, connectors, ignition coil 2, spark plug, ECM
P1031Ignition coil, 2 -secondary range/performanceWiring, connectors, ignition coil 2, spark plug, ECM
P1032Ignition coil, 2 -secondary circuit openWiring, connectors, ignition coil 2, spark plug, ECM
P1033Ignition coil, 5 -secondary circuit highWiring, connectors, ignition coil 5, spark plug, ECM
P1034Ignition coil, 5 -secondary circuit lowWiring, connectors, ignition coil 5, spark plug, ECM
P1035Ignition coil, 5 -secondary range/performanceWiring, connectors, ignition coil 5, spark plug, ECM
P1036Ignition coil, 5 -secondary circuit openWiring, connectors, ignition coil 5, spark plug, ECM
P1045Heated oxygen sensor (H02S) 1, bank 1 system too richWiring, connectors, H02S, ECM
P1046Heated oxygen sensor (H02S) 1, bank 1 system too leanWiring, connectors, H02S, ECM
P1047Heated oxygen sensor (H02S) 1, bank 1 inactiveWiring, connectors, H02S, ECM
P1048Heated oxygen sensor (H02S) 1, bank 1 range/performanceWiring, connectors, H02S, ECM
P1049Heated oxygen sensor (H02S) 2, bank 1 system too richWiring, connectors, H02S, ECM
P1050Heated oxygen sensor (H02S) 2, bank 1 system too leanWiring, connectors, H02S, ECM
P1051Heated oxygen sensor (H02S) 2, bank 1 inactiveWiring, connectors, H02S, ECM
P1052Heated oxygen sensor (H02S) 2, bank 1range/performanceWiring, connectors, H02S, ECM
P1053Heated oxygen sensor (H02S) 1, bank 1 circuithighWiring, connectors, H02S, ECM
P1057Heated oxygen sensor (H02S) 2, bank 1 circuit highWiring, connectors, H02S, ECM
P1065AIR pump relay -circuit highWiring, connectors, AIR pump relay, ECM
P1066AIR pump relay -circuit lowWiring, connectors, AIR pump relay, ECM
P1067AIR pump relay -circuit openWiring, connectors, AIR pump relay, ECM
P1069AIR switching valve -circuit malfunctionWiring, connectors, AIR switching valve, ECM
P1070AIR switching valve -circuit malfunctionWiring, connectors, AIR switching valve, ECM
P1071AIR switching valve -circuit malfunctionWiring, connectors, AIR switching valve, ECM
P1073Intake manifold air control valve -circuit highWiring, connectors, intake manifold air control valve, ECM
P1074Intake manifold air control valve -circuit lowWiring, connectors, intake manifold air control valve, ECM
P1075Intake manifold air control valve -circuit openWiring, connectors, intake manifold air control valve, ECM
P1077EVAP canister purge system -performanceVacuum leak, EVAP system hoses, EVAP solenoid, ECM
P1078EVAP canister purge system -performanceVacuum leak, EVAP system hoses, EVAP solenoid, ECM
P1081EVAP canister purge system -leakVacuum leak, EVAP system hoses, EVAP solenoid, EVAP monitor circuit
P1085EVAP canister purge system -leakVacuum leak, EVAP system hoses, EVAP solenoid, EVAP monitor circuit, filler cap/pipe
P1089EVAP canister purge system -leakVacuum leak, EVAP system hoses, EVAP solenoid, EVAP monitor circuit
P1097EVAP canister purge system -performanceVacuum leak, EVAP system hoses, EVAP solenoid, ECM
P1101Ambient air temperature sensor -circuit highWiring, connectors, ambient air temperature sensor, BCM
P1105Barometric pressure (BARO) sensor, in ECM -circuit malfunctionECM
P1105 [1]Main relay -control circuit highWiring, connections, main relay, ECM
P1106Main relay -control circuit lowWiring, connections, main relay, ECM
P1108Main relay -control circuit openWiring, connections, main relay, ECM
P1117ECM internal faultECM
P1118ECM internal faultECM
P1119ECM -internal faultECM
P1185Intake manifold air control valve -circuit highWiring, connectors, intake manifold air control valve, ECM
P1186Intake manifold air control valve -circuit highWiring, connectors, intake manifold air control valve, ECM
P1187Fuel rail pressure (FRP) sensor -malfunctionWiring, poor connection, fuel pressure regulator control solenoid, fuel rail pressure (FRP) sensor, fuel level low, fuel pressure, high-pressure fuel pump, injector(s)
P1187 1Intake manifold air control valve -circuit highWiring, connectors, intake manifold air control valve, ECM
P11883rd piston cut-off solenoid -malfunctionWiring, connector, 3rd piston cut-off solenoid
P1190Fuel pressure control solenoid -malfunctionWiring, connectors, fuel pressure control solenoid
P1192Engine oil sensor module -malfunctionWiring, connectors, oil quality, oil level
P1197Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 1, bank 2range/performanceWiring, connectors, mechanical fault, CKP, CMP 1 bank 2, ECM
P1198Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 1, bank 2range/performanceWiring, connectors, mechanical fault, CKP, CMP 1 bank 2, ECM
P1199Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 1, bank 2range/performanceWiring, connectors, mechanical fault, CKP, CMP 1 bank 2, ECM
P1200 – P1299 (Fuel and air metering – injector circuit)
P1200Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 1, bank 2 range/performanceWiring, connectors, mechanical fault, CKP, CMP 1 bank 2, ECM
P1201Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 2, bank 2range/performanceWiring, connectors, mechanical fault, CKP, CMP 2 bank 2, ECM
P1202Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 2, bank 2range/performanceWiring, connectors, mechanical fault, CKP, CMP 2 bank 2, ECM
P1203Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 2, bank 2 range/performanceWiring, connectors, mechanical fault, CKP, CMP 2 bank 2, ECM
P1204Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 2, bank 2range/performanceWiring, connectors, mechanical fault, CKP, CMP 2 bank 2, ECM
P1205Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 1, bank 1 range/performanceWiring, connectors, mechanical fault, CKP, CMP 1 bank 1, ECM
P1206Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 1, bank 1 range/performanceWiring, connectors, mechanical fault, CKP, CMP 1bank 1, ECM
P1207Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 1, bank 1 range/performanceWiring, connectors, mechanical fault, CKP, CMP 1bank 1, ECM
P1208Crankshaft position (CKP) sensor/camshaftposition (CMP) sensor 1, bank 1 range/performanceWiring, connectors, mechanical fault, CKP, CMP 1 bank 1, ECM
P1209Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 2, bank 1 range/performanceWiring, connectors, mechanical fault, CKP, CMP 2 bank 1, ECM
P1210Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 2, bank 1range/performanceWiring, connectors, mechanical fault, CKP, CMP 2 bank 1, ECM
P1211Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 2, bank 1 range/performanceWiring, connectors, mechanical fault, CKP, CMP 2 bank 1, ECM
P1212Crankshaft position (CKP) sensor/camshaft position (CMP) sensor 2, bank 1 range/performanceWiring, connectors, mechanical fault, CKP, CMP 2 bank 1, ECM
P1221CAN data bus, TCS -malfunctionWiring, lCS control module trouble code(s) stored
P1222Accelerator pedal position (APP) sensor 1 malfunctionWiring, APP sensor 1, ECM
P1234Accelerator pedal position (APP) sensor 2malfunctionWiring, APP sensor 2, ECM
P1305Power assisted steering -control circuit highWiring, connectors, power assisted steering -control valve, ECM
P1306Power assisted steering -control circuit lowWiring, connectors, power assisted steering -control valve, ECM
P1307Power assisted steering -control circuit malfunctionWiring, connectors, power assisted steering -control valve, ECM
P1313Electronic throttle system -throttle valve movement restrictedWiring, connectors, throttle valve motor, throttlevalve sticking, mechanical fault
P1314Electronic throttle system -throttle valve movement restrictedWiring, connectors, throttle valve motor, throttle valve sticking, mechanical fault
P1315Electronic throttle system -throttle valve movement restrictedWiring, connectors, throttle valve motor, throttle valve sticking, mechanical fault
P1330Starter control -malfunctionWiring, fuse, starter motor, starter motor relay,ECM
P1335Crankshaft position (CKP) sensor malfunctionWiring, connector, CKP sensor, ECM
P1345Mass air flow (MAF) sensor range/performanceWiring, connectors, intake air flow, MAF sensor, ECM
P1346Mass air flow (MAF) sensor range/performanceWiring, connectors, intake air flow, MAF sensor, ECM
P1347Mass air flow (MAF) sensor range/performanceWiring, connectors, intake air flow, MAF sensor, ECM
P1349Mass air flow (MAF) sensor/throttle position sensor (TPS) -correlationWiring, connectors, intake air flow, MAF sensor, TPS, ECM
P1350Mass air flow (MAF) sensor range/performanceWiring, connectors, intake air flow, MAF sensor, ECM
P1351Mass air flow (MAF) sensor -circuit performanceWiring, connectors, intake air flow, MAF sensor, ECM
P1352Mass air flow (MAF) sensor -circuit performanceWiring, connectors, intake air flow, MAF sensor, ECM
P1354Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -implausible signalWiring, connector, CKP sensor, CMP sensor
P1360Oxygen sensors, downstream -signal mismatchWiring, connectors swapped, oxygen sensor(s), ECM
P1389AIR system -flow excessively high or lowWiring, connections, vacuum lines, electric AIR pump/control valve/relay, AIR switching valve/shutoff solenoid(s), ECM
P1390AIR system -flow excessively high or lowWiring, connections, vacuum lines, electric AIR pump/control valve/relay, AIR switching valve/shutoff solenoid(s), ECM
P1392AIR system -flow excessively high or lowWiring, connections, vacuum lines, electric AIR pump/control valve/relay, AIR switching valve/shutoff solenoid(s), ECM
P1403Exhaust gas recirculation (EGR) system -malfunctionWiring, connectors, hoses, intake leak, EGR solenoid, MAF sensor
P1436Exhaust gas temperature sensor 1, bank 1voltage range/performanceWiring, connectors, exhaust gas temperaturesensor, ECM
P1437Exhaust gas temperature sensor 1, bank 2voltage range/performanceWiring, connectors, exhaust gas temperature sensor, ECM
P1461Engine coolant temperature (ECT) sensorimplausible signalWiring, connections, ECT sensor, ECM
P1462Engine coolant temperature (ECT) sensorimplausible signalWiring, connections, ECT sensor, ECM
P1463Engine coolant temperature (ECT) sensorimplausible signalWiring, connections, ECT sensor, ECM
P1464Engine coolant temperature (ECT) sensor implausible signalWiring, connections, ECT sensor, ECM
P1470Turbocharger (TC) boost pressure -pressure too low/highWiring, connectors, hoses, turbocharger (TC)wastegate regulating valve, ECM
P1480Glow plug control module -voltage supply faultWiring, connectors, glow plug control module, ECM
P1481Glow plug(s) -defectiveWiring, connectors, glow plug(s), ECM
P1482Glow plug control module -output stageWiring, connectors, glow plug control module, ECM
P1520Cruise control master switch -malfunctionWiring, connectors, data bus, ignition switch control module, ECM
P1599Ambient air temperature sensor -low inputWiring, connections, ambient air temperature sensor, BCM
P1600 – P1699 (ECM – computer output circuit)
P1600Ambient air temperature sensor -high inputWiring, connections, ambient air temperature sensor, BCM
P1610Engine control relay -defectiveWiring, fuse, engine control relay, ECM
P1611Engine control module (ECM) -5 volt output erraticWiring, poor connection, APP sensor, engine oil sensor, MAF sensor, ECM
P1612Engine control module (ECM) -supply voltageWiring, connector, ignition switch
P1613Engine control module (ECM) -intemal faultECM
P1614Engine control module (ECM) -internal faultECM
P1615Engine control module (ECM) -supply voltage. Wiring, connector, ECM
P1617Engine control module (ECM) -EPROM errorECM
P1630Immobilizer control module -malfunctionWiring, data bus, ignition switch control module, ECM
P1661Injectors -voltage low/highWiring, connectors, injectors, ECM
P1663Fuel pressure control solenoid -defectiveWiring, connectors, fuel pressure control solenoid
P1666Engine control module (ECM) -engine shut-off controlECM
P1681CAN data bus, SRS control module malfunctionWiring, connectors, SRS control module trouble code(s) stored, SRS control module, ECM
P1901Engine oil pressure sensor range/performanceWiring, connections, engine oil pressure sensor, ECM
P1902Engine oil pressure sensor range/performanceWiring, connections, engine oil pressure sensor, ECM
P1909Manifold absolute pressure (MAP) sensor circuit highWiring, connections, MAP sensor, ECM
P1910Manifold absolute pressure (MAP) sensor circuit lowWiring, connections, MAP sensor, ECM
P1913Manifold absolute pressure (MAP) sensorrange/performanceWiring, connections, MAP sensor, ECM
P1914Manifold absolute pressure (MAP) sensorrange/performanceWiring, connections, MAP sensor, ECM
P1915Manifold absolute pressure (MAP) sensorrange/performanceWiring, connections, MAP sensor, ECM
P1916Manifold absolute pressure (MAP) sensorrange/performanceWiring, connections, MAP sensor, ECM
P3050Oxygen sensor -circuit malfunctionWiring, connectors, oxygen sensor(s), ECM
P3080Engine oil pressure sensor -circuit malfunctionWiring, connectors, engine oil pressure sensor, ECM
P3097Intake air temperature (IAT) sensor -value too highWiring, connectors, IAT sensor, ECM
P3098Intake air temperature (IAT) sensor -value toolowWiring, connectors, IAT sensor, ECM
P3099Intake air temperature (IAT) sensor -value toolowWiring, connectors, IAT sensor, ECM
P3121Catalyst temperature sensor -circuit malfunctionWiring, connectors, oxygen sensor (s), ECM
P3131Oxygen sensor 1, bank 1 -circuit malfunctionWiring, connectors, oxygen sensor, ECM
P3133Oxygen sensor -supply voltage lowWiring, connectors, oxygen sensor (s), ECM
P3134Oxygen sensor -supply voltage lowWiring, connectors, oxygen sensor (s), ECM
P3135Particulate filter -implausible signalExhaust leak/blockage, exhaust pressure sensor, hose/pipe blocked/leaking, particulate filter
P3136Particulate filter -signal highExhaust leak/blockage, exhaust pressure sensor, hose/pipe blocked/leaking, particulate filter
P3137Particulate filter -signal lowExhaust leak/blockage, exhaust pressure sensor, hose/pipe blocked/leaking, particulate filter
P3139Particulate filter -implausible signalExhaust leak/blockage, exhaust pressure sensor, hose/pipe blocked/leaking, particulate filter
P3154Intake air temperature (IAT) sensor -signal highWiring, connectors, IAT sensor, ECM
P3155Intake air temperature (IAT) sensor -signal lowWiring, connectors, IAT sensor, ECM