OBDII Saab 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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Saab Codes
Trouble CodeFault LocationProbable Cause
P1000 – P1099 (Fuel and air metering and auxiliary emission control)
P1001Evaporative emission (EVAP) canister purge valve – low outputWiring open circuit/short to ground, EVAP   canister purge valve
P1002Evaporative emission (EVAP) canister purge valve – high outputWiring short to positive, EVAP canister purge valve
P1011Injector 1 – low outputWiring open circuit/short to ground, injector
P1012Injector 1 – high outputWiring short to positive, injector
P1021Injector 2 – low outputWiring open circuit/short to ground, injector
P1022Injector 2 – high outputWiring short to positive, injector
P1026Variable valve lift oil control valve, RH bank – performance problemWiring, variable valve lift oil control valve, variable valve lift oil pressure switch, ECM
P1028Variable valve lift oil control valve, LH bank – performance problemWiring, variable valve lift oil control valve, variable valve lift oil pressure switch, ECM
P1031Injector 3 – low outputWiring open circuit/short to ground, injector
P1032Injector 3 – high outputWiring short to positive, injector
P1041Injector 4 – low outputWiring open circuit/short to ground, injector
P1042Injector 4 – high outputWiring short to positive, injector
P1051Injector 5 – low outputWiring open circuit/short to ground, injector
P1052Injector 5 – high outputWiring short to positive, injector
P1061Injector 6 – low outputWiring open circuit/short to ground, injector
P1062Injector 6 – high outputWiring short to positive, injector
P1086Intake manifold air control actuator position sensor, LH – voltage lowWiring, intake manifold air control actuator position sensor, ECM
P1087Intake manifold air control actuator position sensor, LH – voltage highWiring, intake manifold air control actuator position sensor, ECM
P1088Intake manifold air control actuator position sensor, RH – voltage lowWiring, intake manifold air control actuator position sensor, ECM
P1089Intake manifold air control actuator position sensor, RH – voltage highWiring, intake manifold air control actuator position sensor, ECM
P1090Intake manifold air control actuator, RH – stuck openWiring, intake manifold air control actuator position sensor, ECM
P1091Intake manifold air control actuator, RH – stuck closedWiring, intake manifold air control actuator position sensor, ECM
P1092Intake manifold air control actuator, LH – stuck openWiring, intake manifold air control actuator position sensor, ECM
P1093Intake manifold air control actuator, LH – stuck closedWiring, intake manifold air control actuator position sensor, ECM
P1094Intake manifold air control actuator, RH – open circuitWiring, intake manifold air control actuator position sensor, ECM
P1095Intake manifold air control actuator, RH – over currenUshort circuitWiring, intake manifold air control actuator position sensor, ECM
P1096Intake manifold air control actuator, LH – open circuitWiring, intake manifold air control actuator position sensor, ECM
P1097Intake manifold air control actuator, LH – over currenUshort circuitWiring, intake manifold air control actuator position sensor, ECM
P1100 – P1199 (Fuel and air metering)
P1100Starter signal – circuit malfunctionStarter motor circuit, NP/TR switch, CPP   switch, ECM
P1101Intake airflow – incorrectWiring, mechanical fault, engine coolant temperature (ECT) sensor, barometric pressure (BARO) sensor, intake air temperature (IAT) sensor, manifold absolute pressure (MAP) sensor, mass air flow (MAF) sensor,throttle position (TP) switch
P1102MAP/BARO sensor switching valve – circuit malfunctionWiring, MAP/BARO sensor switching valve, ECM
P1103Engine torque control signal 1 – circuit malfunctionWiring, ECM, TCM
P1104Traction control signal – circuit malfunctionWiring, traction control module
P1105Manifold absolute pressure (MAP) sensor, TC   system – performance problemTC system – mechanical fault, air leak between throttle body – TC, MAP sensor- TC system, exhaust blockage
P1106Manifold absolute pressure (MAP) sensor, TC   system – range/performance problemMAP sensor – TC system
P1107Manifold absolute pressure (MAP) sensor, TC   system – open circuit/short to groundWiring open circuit/short to ground, ECM
P1108Manifold absolute pressure (MAP) sensor, TC system – short to positive  Wiring short to positive, ECM
P1109Throttle actuator – incorrect signalWiring, connections, throttle body dirty/damaged, throttle actuator
P1110Turbocharger (TC) bypass valve – range/performance problemHose(s), TC bypass solenoid, TC bypass valve
P1111Barometric pressure (BARO) sensor- voltage highWiring, BARO sensor, ECM
P1112Barometric pressure (BARO) sensor- range/   performance problemWiring, BARO sensor, ECM
P1115Engine torque control cut signal – voltage highWiring, ECM, TCM
P1116Engine torque control cut signal – voltage lowWiring, ECM, TCM
P1120Starter signal – voltage highStarter motor circuit, wiring short to positive, ECM
P1121Park/neutral position (PNP) switch/neutral position (NP) switch – voltage lowWiring short to ground, selector cable, PNP   switch, ECM
P1122Accelerator pedal position (APP) sensor – no signalWiring, connections, APP sensor
P1124Traction control signal – voltage highWiring open/short to positive
P1125Throttle actuator – incorrect signalWiring, connections, throttle actuator
P1126Throttle actuator – incorrect signalWiring, connections, throttle body dirty/damaged, throttle actuator
P1130Heated oxygen sensor (H02S) 1 – open circuitWiring, H02S, ECM
P1131Heated oxygen sensor (H02S) 1, bank 1 – malfunctionWiring, H02S, ECM
P1132Heated oxygen sensor (H02S) 1, bank 1 – malfunctionWiring, H02S, ECM
P1133Heated oxygen sensor (H02S) 1, bank 1 – insufficient switchingWiring, exhaust system leaking, H02S
P1134Heated oxygen sensor (H02S) 1, bank 1 – slow responseWiring, oxygen sensor heater, exhaust system leaking, H025
P1135Heated oxygen sensor (H02S) 1, bank 1 – heater low inputWiring, fuel pump relay, H02S, ECM
P1136Heated oxygen sensor (H02S) 1, bank 1 – heater high inputWiring, fuel pump relay, H02S, ECM
P1137Heated oxygen sensor (H02S) 2, bank 1 – voltage lowWiring, exhaust system leaking, H02S
P1138Heated oxygen sensor (H02S) 2, bank 1 – voltage highWiring, H025
P1139Heated oxygen sensor (H02S) 1, heater control – range/performance problemWiring, H02S, ECM
P1140Heated oxygen sensor (H02S) 1, bank 2, heater – range/performance problemWiring, H02S, ECM
P1141Heated oxygen sensor (H02S) 2, bank 1 – heater low inputWiring, fuel pump relay, H02S, ECM
P1142Heated oxygen sensor (H02S) 2, bank 1 – heater high inputWiring, fuel pump relay, H02S, ECM
P1143Manifold absolute pressure (MAP) sensor/ barometric pressure (BARO) sensor – range/ performance problem voltage lowHose leak/blockage, MAP/BARO sensor, MAP/ BARO sensor switching solenoid
P1144Manifold absolute pressure (MAP) sensor/ barometric pressure (BARO) sensor – range/ performance problem voltage highMAP/BARO sensor
P1146Manifold absolute pressure (MAP) sensor – range/performance problem voltage highWiring, MAP sensor, TP sensor
P1150Heated oxygen sensor (H02S) 1, heater- voltage highWiring, H02S, ECM
P1151Heated oxygen sensor (H02S) 2 -voltage highWiring, H02S, ECM
P1152Heated oxygen sensor (H02S) 1, bank 1 -range/   performance problem voltage lowWiring, H02S, ECM
P1153Heated oxygen sensor (H02S) 1, bank 2 – insufficient switchingWiring, oxygen sensor heater, exhaust system leaking, H02S
P1154Heated oxygen sensor (H02S) 1, bank 2 – slow responseWiring, oxygen sensor heater, exhaust system leaking, H025
P1155Heated oxygen sensor (H02S) 1, bank 2 – range/   performance problem voltage highWiring, H02S, ECM
P1160Throttle actuator control (TAC)- return spring failureWiring, TAC motor
P1171Fuel system – lean during accelerationFuel filter, fuel pump, H025, injectors
P1172Short term fuel trim (FT), min. value – rich mixtureFuel pressure, injector(s), evaporative emission (EVAP) canister purge valve
P1173System too rich, during idlingFuel pressure, battery, exhaust leak, injector(s)
P1174Fuel trim, bank 1 -adapted value out of rangeAir induction system, vacuum leak, exhaust leak/blockage, fuel system, ignition system, injectors, mechanical fault
P1175Fuel trim, bank 2 -adapted value out of rangeAir induction system, vacuum leak, exhaust leak/blockage, fuel system, ignition system, injectors, mechanical fault
P1181Long term fuel trim (FT), max. value – lean mixtureFuel pressure, injector(s), intake system, mass air flow (MAF) sensor
P1182Long term fuel trim (FT), min. value – rich mixtureFuel pressure, injector(s), evaporative emission (EVAP) canister purge valve
P1200 – P1299 (Fuel and air metering – injector circuit)
P1206Secondary air injection (AIR) pump relay – low outputWiring open circuit/short to   ground, secondary air injection (AIR) pump, relay
P1207Injector air control solenoid – voltage lowWiring, injector air control solenoid, ECM
P1208Knock sensor (KS)- voltage lowWiring, KS, ECM
P1211Idle air control (lAC) valve – low outputWiring open circuit/short to ground, lAC valve
P1212Idle air control (lAC) valve – high outputWiring short to positive, lAC valve
P1230Throttle position (TP) sensor 1 & 2 – range/performance problemWiring, connectors, throttle control unit, ECM
P1231Throttle position (TP) sensor 1 & 2 – range/performance problemWiring, connectors, throttle control unit, ECM
P1236Intake manifold air control solenoid, outer flap – open circuit/short to groundWiring, intake manifold air control solenoid
P1237Intake manifold air control solenoid, outer flap – short to positiveWiring, intake manifold air control solenoid
P1240Throttle position motor – short circuitWiring, throttle control unit, ECM
P1244Turbocharger (TC) wastegate regulating valve – voltage lowWiring, TC wastegate regulating valve, ECM
P1245Turbocharger (TC) wastegate regulating valve- failsafeWiring, TC wastegate regulating valve, ECM
P1246Intake manifold air control solenoid, inner flap- open circuit/short to groundWiring, intake manifold air contro_l solenoid
P1247Intake manifold air control solenoid, inner flap – short to positiveWiring, intake manifold air control solenoid
P1251Throttle position motor – fully closed signalWiring, mechanical fault, throttle control unit, ECM
P1252Throttle position motor – fully open signal/   no currentWiring, throttle control unit, ECM
P1253Throttle position motor – fully open signal during crankingWiring, mechanical fault, throttle control unit, ECM
P1258Engine coolant – overheatingEngine coolant level low, engine coolant thermostat, engine cooling fans, radiator ventilation obstructed, water pump, mechanical fault
P1260Throttle return spring – weak spring forceMechanical fault, throttle control unit
P1261Throttle valve – tight/stickingMechanical fault, throttle control unit, ECM
P1263Throttle valve – moved manually while engine runningOperator error, throttle control unit, mechanical fault
P1264Throttle valve open – accelerator releasedThrottle control unit, mechanical fault
P1300 – P1399 (Ignition system or misfire)
P1300Random/multiple cylinder(s) – misfire detectedMechanical fault, wiring, ignition/fuel system, mass air flow (MAF) sensor, fuel pump relay, manifold absolute pressure (MAP) sensor, intake leak
P1301Cylinder 1 – misfire detectedMechanical fault, ignition/fuel system, injector
P1302Cylinder 2 – misfire detectedMechanical fault, ignition/fuel system, injector
P1303Cylinder 3 – misfire detectedMechanical fault, ignition/fuel system, injector
P1304Cylinder 4 – misfire detectedMechanical fault, ignition/fuel system, injector
P1306Camshaft position (CMP) actuator, RH – open circuitWiring, CMP actuator
P1307Camshaft position (CMP) actuator, RH – short circuitWiring, CMP actuator
P1308Camshaft position (CMP) actuator, LH – open circuitWiring, CMP actuator
P1309Camshaft position (CMP) actuator, LH – short circuitWiring, CMP actuator
P1310Ignition coils, bank 1 – no supply voltageWiring, ignition coil assembly, ECM
P1312Ignition coil – knock detection, cylinder 1 & 2Wiring open circuit/short to positive, ignition coil assembly, ECM
P1315Ignition diagnostic module – malfunctionWiring, ignition diagnostic module, ECM
P1320Ignition coils, bank 2 – no supply voltageWiring, ignition coil assembly, ECM
P1322Electronic throttle system (ETS) -incorrect rpm signalWiring, engine control module (ECM)/ETS control module communication
P1325Knock sensor (KS) – voltage lowWiring, KS, ECM
P1334Ignition coil – knock detection, cylinder 3 & 4Wiring open circuit/short to positive, ignition coil assembly, ECM
P1340Ignition diagnostic module – malfunctionWiring, ignition diagnostic module, ECM
P1341Cylinder 1 – misfire detectedSpark plug, wiring, ignition coil, ignition diagnostic module
P1342Cylinder 2 – misfire detectedSpark plug, wiring, ignition coil, ignition diagnostic module
P1343Cylinder 3 – misfire detectedSpark plug, wiring, ignition coil, ignition diagnostic module
P1344Cylinder 4 – misfire detectedSpark plug, wiring, ignition coil, ignition diagnostic module
P1350Ignition diagnostic module, random/multiple cylinder(s) – no signalWiring, ignition diagnostic module, ECM
P1351Ignition diagnostic module, cylinder 1 .:. no signalWiring, ignition diagnostic module, ECM
P1352Ignition diagnostic module, cylinder 2 – no signalWiring, ignition diagnostic module, ECM
P1353Ignition diagnostic module, cylinder 3 – no signalWiring, ignition diagnostic module, ECM
P1354Ignition diagnostic module, cylinder 4 – no signalWiring, ignition diagnostic module, ECM
P1380Antilock brake system (ABS)/traction control system (TCS), rough road signal to ECM – malfunctionABS trouble code(s) stored
P1381Antilock brake system (ABS)/traction control system (TCS), rough road signal to ECM – no communicationWiring, poor connections, ABS
P1390Misfire detected, random – fuel level lowWiring, connectors, injector(s), fuel pump relay, fuel pressure, mass air flow (MAF) sensor, intake leak, fuel level
P1391Cylinder 1, misfire detected – fuel level lowWiring, connectors, injector, fuel level
P1392Cylinder 2, misfire detected – fuel level lowWiring, connectors, injector, fuel level
P1393Cylinder 3, misfire detected – fuel level lowWiring, connectors, injector, fuel level
P1394Cylinder 4, misfire detected – fuel level lowWiring, connectors, injector, fuel level
P1395Cylinder 5, misfire detected – fuellevel lowWiring, connectors, injector, fuel level
P1396Cylinder 6, misfire detected – fuel level lowWiring, connectors, injector, fuel level
P1400 – P1499 (Emission control)
P1400Cold start emission control – malfunctionIntake/exhaust leak/blockage, mechanical fault, idle speed control (ISC) system, ignition control, engine coolant temperature (ECT) sensor, H025
P1401Fuel tank pressure control system – malfunctionEVAP system, fuel tank pressure sensor
P1402Fuel level sensor – circuit malfunctionWiring, instrument cluster, fuel level sensor, ECM
P1413Secondary air injection (AIR) pump relay – open circuit/short to groundWiring open circuit/short to ground, AIR   pump relay
P1414Secondary air injection (AIR) pump relay – short to positiveWiring short to positive, AIR pump relay
P1416Fuel system/misfire detected -fuel level lowIgnition/fuel system, injector(s), fuel level
P1420Fuel tank pressure control solenoid – circuit malfunction voltage highWiring open/short to positive, fuel tank pressure control solenoid, ECM
P1421Exhaust gas recirculation (EGR) system -voltage highWiring open/short to positive, EGR solenoid, ECM
P1422Evaporative emission (EVAP) canister purge valve – voltage highWiring open/short to positive, EVAP valve, ECM
P1423Evaporative emission (EVAP) canister purge system – vent control voltage highWiring open/short to positive, EVAP vent valve, ECM
P1440Fuel tank pressure control system – voltage lowFuel tank pressure control solenoid, fuel filler cap, EVAP drain/vent valve, EVAP canister/ valve, fuel tank, hose/pipe leak
P1441Evaporative emission (EVAP) canister purge valve/fuel tank level sensor – malfunctionWiring, connectors, EVAP canister purge valve, fuel tank level sensor, ECM
P1442Evaporative emission (EVAP) system/fuel tank level sensor – small leak detected/malfunctionHose connection(s), intake leak, EVAP canister, EVAP canister purge valve, wiring, fuel tank level sensor
P1443Evaporative emission (EVAP) canister purge system – vent control malfunctionHose blockage, EVAP drain valve
P1444Evaporative emission (EVAP) system – open circuit/short to groundWiring open circuit/short to ground, connectors, EVAP canister purge valve
P1445Evaporative emission (EVAP) system – open circuit/short to positiveWiring open circuit/short to positive, connectors, EVAP canister purge valve
P1446Evaporative emission (EVAP) atmospheric pressure solenoid – voltage lowWiring, atmospheric pressure solenoid, ECM
P1447Evaporative emission (EVAP) atmospheric pressure solenoid – voltage highWiring, atmospheric pressure solenoid, ECM
P1448Evaporative emission (EVAP) atmospheric pressure solenoid – range/performance problemWiring, atmospheric pressure solenoid, ECM
P1450A/C relay – low outputWiring, A/C relay
P1451Evaporative emission (EVAP) pressure sensor, in fuel tank – range/performance problemWiring, connectors, EVAP pressure sensor
P1452Evaporative emission (EVAP) pressure sensor, in fuel tank – signal too low when depressurizedWiring, EVAP canister purge valve, EVAP   system leak, EVAP pressure sensor
P1453Evaporative emission (EVAP) pressure sensor, in fuel tank – signal too high when depressurizedWiring, EVAP canister purge valve, hose(s), EVAP pressure s nsor
P1455Evaporative emission (EVAP) pressure sensor/fuel tank level sensor, in fuel tank – large leak detected/malfunctionHose connection(s), wiring, EVAP pressure sensor, fuel tank level sensor
P1456Evaporative emission (EVAP) – small leak/fuel tank level sensor, in fuel tank – malfunctionLoose gas cap, wiring, connections, fuel tank level sensor
P1460Immobilizer activated – incorrectly programmed/not programmedTrouble code{s) stored in other system(s), ECM/instrumentation control module/ ignition key not matched to immobilizer control module, immobilizer control module
P1480Engine coolant blower motor relay 1 – voltage highWiring, blower motor relay, ECM
P1490Thermostat – malfunctionThermostat, cooling system, engine coolant blower motor
P1491Evaporative emission (EVAP) pressure sensor/fuel tank level sensor, in fuel tank – range/performanceproblem/malfunctionWiring, connector(s), EVAP pressure sensor, fuel tank level sensor
P1492Evaporative emission (EVAP) pressure sensor/fuel tank level sensor, in fuel tank – signal too low when depressurized/malfunctionWiring, connector(s), EVAP pressure sensor, fuel tank level sensor
P1493Evaporative emission (EVAP) pressure sensor/fuel tank level sensor, in fuel tank – signal too high when depressurized/ malfunctionWiring, connector(s), EVAP pressure sensor, fuel tank level sensor
P1494Exhaust gas recirculation (EGR) solenoid valve – signal 2 – voltage lowWiring, EGR solenoid valve
P1495Exhaust gas recirculation (EGR) solenoid valve – signal 2 – voltage highWiring, EGR solenoid valve, ECM
P1496Exhaust gas recirculation (EGR) solenoid valve – signal 3 – voltage lowWiring, EGR solenoid valve
P1497Exhaust gas recirculation (EGR) solenoid valve – signal 3 – voltage highWiring, EGR solenoid valve, ECM
P1498Exhaust gas recirculation (EGR) solenoid valve – signal 4 – voltage lowWiring, EGR solenoid valve
P1499Exhaust gas recirculation (EGR) solenoid valve – signal 4 – voltage highWiring, EGR solenoid valve, ECM
P1500 – P1599 (Vehicle or idle speed control)
P1500Battery voltage too low/highWiring, alternator, battery
P1502Engine coolant blower motor – malfunctionCooling system, radiator ventilation obstructed
P1505Idle air (lAC) control valve – voltage highWiring, lAC valve, ECM
P1507Idle air (lAC) control system – malfunctionIntake system, lAC valve
P1510Idle air (lAC) control valve, circuit 1 – voltage lowWiring, lAC valve, ECM
P1511Idle air (lAC) control valve, circuit 1 -voltage highWiring, lAC valve, ECM
P1512Idle air (lAC) control valve, circuit 2 – voltage lowWiring, lAC valve, ECM
P1513Idle air (lAC) control valve, circuit 2 -voltage highWiring, lAC valve, ECM
P1514Idle air (lAC) control valve, circuit 3 -voltage lowWiring, lAC valve, ECM
P1515Idle air (lAC) control valve, circuit 3 – voltage highWiring, lAC valve, ECM
P1516Throttle command/actual throttle position – signal variationWiring, throttle valve sticking, throttle control module
P1517Idle air (lAC) control valve, circuit 4 -voltage highWiring, lAC valve, ECM
P1518Starter motor switch – circuit malfunctionWiring
P1520Engine coolant blower motor relay 1 – voltage highWiring open/short to positive, blower motor relay, ECM
P1521Stop lamp switch – voltage highWiring, stop lamp switch
P1523Throttle actuator control (TAC) system- range/performance problemWiring, throttle motor, TP sensor, ECM
P1530Accelerator pedal position (APP) sensor   1 & 2 – range/performance problemWiring, throttle control unit, ECM
P1531Accelerator pedal position (APP) sensor 1 & 2 – adapted value out of range  Wiring, throttle control unit, ECM
P1532Accelerator pedal position (APP) sensor   1 & 2 – short circuitWiring, throttle control unit, ECM
P1540Vehicle speed sensor (VSS)- malfunction 2Wiring, instrument cluster, VSS, ECM
P1544Exhaust gas temperature sensor – increased temperature detectedRepair other DTC’s, exhaust system, replace pre-CAT
P1549Turbocharger (TC) system – malfunctionMechanical fault, hose(s), TC wastegate regulating valve
P1551Throttle valve adaptation – mechanical stop not adaptedMechanical fault, wiring, throttle position sensor (TPS)
P1560Engine control module (ECM) – battery voltage supplyWiring, fuse, ECM
P1561Traction control module/ECM communication – signal highWiring short to positive, throttle position   (TP) sensor
P1570Immobilizer read coilWiring, immobilizer read coil, immobilizer control module
P1571Engine control module (ECM)- incorrect immobilizer codeImmobilizer code not programmed
P1572Immobilizer control module/ECM – circuit malfunctionWiring, immobilizer control module, ECM
P1574Stop lamp switch – signal errorWiring, connections, stop lamp switch
P1576Brake pedal position (BPP) switch – open circuit/short to positiveWiring open circuit/short to positive, BPP   switch
P1577Brake pedal position (BPP) switch – short to groundWiring short to ground, BPP switch
P1578Body control module (SCM) to instrument cluster communication – malfunctionWiring, instrument cluster
P1590Park neutral position (PNP) switch – voltage highWiring, PNP switch, ECM
P1591Park neutral position (PNP) switch – voltage lowWiring, PNP switch, ECM
P1592Park neutral position (PNP) switch – circuit malfunctionWiring, PNP switch, ECM
P1594Transmission control module (TCM) – communication circuit malfunctionWiring, TCM, ECM
P1595Transmission control module (TCM)- communication circuit voltage lowWiring, TCM, ECM
P1596Transmission control module (TCM)- communication circuit voltage highWiring, TCM, ECM
P1600 – P1699 (ECM – computer output circuit)
P1600Engine control module (ECM) – malfunctionEngine control module (ECM)
P1601Engine control module (ECM) – defectiveECM
P1602Engine control module (ECM) – defectiveECM
P1603Engine control module (ECM) – defectiveECM
P1604Engine control module (ECM) – defectiveECM
P1605Engine control module (ECM) – defectiveECM
P1606Engine control module (ECM) – defectiveECM
P1607Engine control module (ECM) – defectiveECM
P1608Engine control module (ECM) – defectiveECM
P1609Engine control module (ECM) – defectiveECM
P160AInvalid ECM programECM, immobilizer
P1610Engine control module (ECM) – defectiveECM
P1611Engine control module (ECM) – defectiveECM
P1613Engine control module (ECM) – defectiveECM
P1614Engine control module (ECM) – defectiveECM
P1621Engine control module (ECM) – memory performanceECM
P1622CAN data bus, instrumentation control moduleWiring
P1623CAN data bus, TCMWiring
P1624CAN data bus, TCMTCM trouble code(s) stored
P1625CAN data bus, TCS/ABSWiring
P1627Engine control module (ECM) – malfunctionEngine control module (ECM)
P1628Battery voltage – too low/highWiring, alternator, battery
P1629Invalid ECM programECM, immobilizer
P1630Traction control system (TCS) – signal lowWiring open circuit/short to ground, traction control module/engine control module (ECM) communication  
P1631Engine control module (ECM) – defectiveECM
P1632Engine control module (ECM) – defectiveECM
P1633Engine control module (ECM), ignition supply voltageFuse, wiring, ECM
P1634Engine control module (ECM) – ignition supply voltage – voltage lowWiring, ECM
P1637Alternator ‘L’ terminal – circuit malfunctionWiring, voltage regulator, alternator, battery temperature sensor, ECM
P1640Engine control relay – no voltage to ECM pin 1Wiring, connectors, engine control relay
P1641Fuel pump relay – no voltage to fuel pump/oxygen sensor heaterWiring, connectors, fuel pump relay
P1648Invalid ECM programECM, immobilizer
P1651Engine control module (ECM) – RAM errorECM
P1652Engine control module (ECM) – ROM errorECM
P1652·Engine control relay – open circuit/short to groundWiring open circuit/short to ground, connectors, engine control relay, ECM
P1653Engine control relay – short to positiveWiring short to positive, connectors, engine control relay, ECM
P1654Fuel pump relay – open circuit/short to groundWiring open circuit/short to ground, connectors, fuel pump relay
P1655Fuel pump relay – short to positiveWiring short to positive, connectors, fuel pump relay
P1656AIC relay – open circuit/short to groundWiring open circuit/short to ground, connectors, AIC relay
P1657AIC relay – short to positiveWiring short to positive, connectors, AIC   ·relay
P1658Turbocharger (TC) bypass valve – open circuiUshort to groundWiring open circuit/short to ground, connectors, TC bypass valve
P1659Turbocharger (TC) bypass valve – short to positiveWiring short to positive, connectors, TC   bypass valve
P1662Turbocharger (TC) wastegate regulating valve – open circuit/short to groundWiring open circuit/short to ground, connectors, TC wastegate regulating valve
P1663Turbocharger (TC) wastegate regulating valve – short to positiveWiring short to positive, connectors, TC   wastegate regulating valve
P1670Throttle actuator limp-home relay – open circuit/short to groundWiring open circuit/short to ground, connectors, throttle actuator limp-home relay
P1671Throttle actuator limp-home relay – short to positiveWiring short to positive, connectors, throttle actuator limp-home relay
P1676Injector circuits- open circuit/short to ground/positiveWiring, fuse, injector(s), ECM
P1677Invalid ECM programECM, immobilizer
P1678Invalid ECM programECM, immobilizer
P1679Invalid ECM programECM, immobilizer
P1681Engine control module (ECM) – malfunctionEngine control module (ECM)
P1682Engine control module (ECM) – ignition power supply less than 10 VWiring, ECM
P1683Engine control module (ECM) – malfunctionEngine control module (ECM)
P1698Engine torque control cut signal – voltage lowWiring, ECM, TCM
P1699Engine torque control cut signal – voltage highWiring, ECM, TCM
P1700 – P1799 (Transmission)
P1700AT- throttle position (TP) sensor- circuit malfunctionWiring, TP sensor
P1701Cruise control set signal -AT- circuit malfunctionWiring, cruise control switch, TCM
P1702AT diagnosis signal- voltage lowWiring short circuit, TCM
P1703Shift solenoid (SS) low clutch timing – circuit malfunctionWiring, shift solenoid, TCM
P1704Shift solenoid (SS) 2-4 brake timing – circuit malfunctionWiring, shift solenoid, TCM
P1705Shift solenoid (SS) 2-4 brake pressure control – circuit malfunctionWiring, shift solenoid, TCM
P1711Engine torque control signal 1 – circuit malfunctionWiring, ECM, TCM
P1712Engine torque control signal 2 – circuit malfunctionWiring, ECM, TCM
P1722AT diagnosis signal -voltage highWiring short to positive, TCM, ECM
P1742Automatic transmission diagnosis signal – circuit malfunctionWiring, TCM
P1743Torque Converter Clutch Solenoid Failed On Conditions
P1800 – P1899 (Transmission)
P1810Transmission fluid pressure (TFP) switch – manual valve positionFluid level low, wiring, selector lever linkage incorrectly adjusted, ECMfTCM
P1860Torque converter clutch (TCC) solenoid, pulse width modulation (PWM) – circuit malfunctionWiring open circuit/short circuit to ground, TCC solenoid, ECM
P1895Engine Torque No Data BUS from ECM
P1896Engine Torque No Data BUS from ECM
P1900 – P1999 (Transmission)
P1901CAN data bus, multifunction control module 1Wiring
P1902CAN data bus, multifunction control module 2Wiring
P1908CAN data bus, instrument panelWiring
P1921CAN data bus, ECMWiring
P1923CAN data bus, TCMWiring
P1925CAN data bus, TCS/ABSWiring