GM OBD/OBD2 Codes >> GM 94-02 3.8L VIN L/K/1 Regal

GM

94-02 3.8L VIN L/K/1
Scan CodeFault LocationProbable Cause
P0000-P0999Refer to OBD-II generic trouble code table
P1106Manifold absolute pressure (MAP) sensor – circuit intermittent – voltage highWiring open circuit/short circuit to positive
P1107Manifold absolute pressure (MAP) sensor – circuit intermittent – voltage lowWiring open circuit/short circuit to ground
P1111Intake air temperature (IAT) sensor – circuit intermittent – voltage highWiring open circuit/short circuit to positive, ground lead defective
P1112Intake air temperature (IAT) sensor – circuit intermittent – voltage lowWiring short circuit to ground
P1114Engine coolant temperature (ECT) sensor – circuit malfunction – voltage lowWiring short circuit to ground
P1115Engine coolant temperature (ECT) sensor – circuit malfunction – voltage highWiring open circuit/short circuit to positive, ground lead defective
P1121Throttle position (TP) sensor – circuit malfunction – voltage highWiring open circuit/short circuit to positive, ground lead defective
P1122Throttle position (TP) sensor – circuit malfunction – voltage lowWiring open circuit/short circuit to ground
P1133Heated oxygen sensor (HO2S) 1 – insufficient switchingWiring open circuit/short circuit to ground,exhaust system leaking, HO2S
P1134Heated oxygen sensor (HO2S) 1 – slow responseWiring open circuit/short circuit to ground,exhaust system leaking, HO2S
P1171Fuel system – lean during accelerationFuel filter, fuel pump, HO2S, injectors
P1189Engine oil pressure warning lamp switch – circuit malfunctionWiring, engine oil pressure warning lamp switch, ECM
P1200Injector(s) – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, ECM
P1257Boost control problemWiring short circuit to ground, hoses blocked/leaking, boost bypass actuator, boost control solenoid, ECM
P1260Fuel pump speed relay – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, fuel pump relay, fuel pump control module, ECM
P1336Crankshaft position sensor (CKP) – variation not learnedLearning procedure not performed
P1350Ignition control module (ICM) – elctronic spark timing (EST)/ignition control (IC)/bypass circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM
P1351Ignition control module, ignition control (IC) circuit – voltage highWiring open circuit, ICM, ECM
P1352Ignition control circuit – bypass line – voltage highWiring open circuit, ICM, ECM
P1361Ignition control module (ICM) – elctronic spark timing (EST)/ignition control (IC)/bypass circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM
P1362Ignition control circuit, bypass line – voltage lowWiring short circuit to ground/short circuit to positive, ICM, ECM
P1374Crankshaft position (CKP)Wiring open circuit/short circuit to ground/short circuit to positive, wiring routed near spark plug wires, ignition coils arcing/tracking, ICM, ECM
P1380Rough road signal – signal errorABS control module trouble code(s) stored
P1381Rough road signal – no communication from antilock brake system (ABS) CAN data busWiring open circuit, ABS system
P1403Exhaust gas recirculation (EGR) valve solenoid 1Wiring open circuit/short circuit to ground, exhaust system blocked, EGR valve, ECM
P1404 (Model Years 1998 – 2002)Exhaust gas recirculation (EGR) valve -stuck openWiring open circuit/short circuit to positive, exhaust system blocked, EGR valve, ECM
P1405Exhaust gas recirculation (EGR) valve solenoid 3Wiring open circuit/short circuit to ground, exhaust system blocked, EGR valve, ECM
1406Exhaust gas recirculation (EGR) valve position sensor – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, supply wire, EGR valve, ECM
P1441Evaporative emission (EVAP) system – leak detectedWiring short circuit to ground, hose connection(s), EVAP system vacuum switch, EVAP canister purge valve, ECM
P1442Evaporative emission (EVAP) system vacuum switch – circuit malfunctionWiring open circuit/short circuit to ground, EVAP system vacuum switch, ECM
P1483Engine cooling system – performanceCooling system, engine coolant temperature (ECT) sensor, intake air temperature (IAT) sensor
P1520Park/neutral position (PNP) switchWiring short circuit to ground, incorrectly adjusted, ECM
P1530A/C refrigerant pressure sensor – circuit malfunctionA/C refrigerant pressure, wiring open circuit/short circuit to ground/short circuit to positive, A/C refrigerant pressure sensor, ECM
1531Low A/C refrigerant chargeLow A/C refrigerant charge, wiring open circuit/short circuit to ground/short circuit to positive, A/C refrigerant low pressure switch, ECM
P1546A/C compressor clutch relay – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, A/C compressor clutch relay, ECM
P1550Cruise control stepper motor, circuit malfunctionWiring open circuit/short circuit to positive, cruise control module, ECM
P1554Cruise control status circuitWiring short circuit to ground, cruise control module, ECM
P1558Cruise control servo position sensor – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, hoses leaking, cruise control servo, cruise control cable binding
P1561Cruise control vent solenoidWiring open circuit/short circuit to ground/short circuit to positive, cruise control servo, ECM
P1562Cruise control vacuum solenoidWiring open circuit/short circuit to ground/short circuit to positive, cruise control servo, ECM
P1565Cruise control servo position sensorWiring open circuit/short circuit to ground/short circuit to positive, cruise control servo, ECM
P1567Cruise control switch – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, cruise control switch, brake pedal vacuum valve, ECM
P1568Cruise control servo – servo position sensor highHose blocked, brake pedal vacuum valve, cruise control servo, cruise control cable binding
P1571Traction control system (TCS), torque request circuitWiring open circuit/short circuit to ground/short circuit to positive, ABS control module trouble code (s) stored, ECM
P1573Data bus – antilock brake system (ABS)/traction control system (TCS)Wiring, ABS control module trouble codes(s) stored
P1575Brake pedal position (BPP) switch – extended travelWiring short circuit to positive, BPP switch, ECM
P1585Cruise control system – inhibit output circuitHoses blocked, brake pedal vacuum valve, cruise control servo, cruise control cable binding
P1602CAN data bus – antilock brake system (ABS)/traction control system (TCS)Wiring, ABS control module trouble code(s) stored/td>
P1604CAN data busWiring, BCM trouble code(s) stored
P1605CAN data bus – A/CWiring, A/C system trouble code(s) stored
P1610CAN data bus – body control module (BCM)Wiring, BCM trouble code(s) stored
P1619Engine oil life monitor reset switch – circuit malfunctionWiring short circuit to ground, engine oil life monitor reset switch, ECM
P1623Engine control module (ECM) – PROMInsecure PROM, ECM
P1626 (Model Years 1994-1995)Data bus, immobilizerWiring, BCM trouble code(s) stored
P1626 (Model Years 1996-2002)Immobilizer control module – fuel enable signalIncorrect ignition key, wiring open circuit/short circuit to ground/short circuit to positive, immobilizer control module, ECM
P1629Immobilizer control module – fuel enable signalIncorrect ignition key, wiring open circuit/short circuit to ground/short circuit to positive, immobilizer control module, ECM
P1630 (Model Years 1994-1995)Battery voltage – high/lowWiring, alternator, ECM
P1630 (Model Years 1997-2000)Engine control module (ECM), immobilizer code learning modeImmobilizer code not programmed
P1631Engine control module (ECM) – incorrect immobilizer codeIncorrect key, immobilizer code not programmed
P1635Sensor supply voltage – circuit A malfunctionWiring short circuit to positive, ground wiring open circuit, TP sensor, MAP sensor, EGR valve, ECM
P1639Sensor supply voltage – circuit B malfunctionWiring short circuit to ground/positive, ground wiring open circuit, A/C refrigerant pressure sensor, ECM
P1640Engine control module quad driver/output driverWiring, ECM controlled components, ECM *(see below for additional information)
P1641 (Model Year 1994-1997)Malfunction indicator lamp (MIL) – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, MIL, supply wire, ECM
P1641 (Model Years 1998 – 2002)A/C compressor clutch relay – circuit malfunctionWiring open circuit/short circuit to positive, supply wire, A/C compressor relay, ignition main relay, ECM
P1643Fuel pump control module – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, fuel pump control module, ECM
P1645Supercharger (SC) control valve solenoid – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, SC control valve solenoid, ECM
P1646Supercharger (SC) control valve solenoid – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, SC control valve solenoid, ECM
P1650Engine control module, quad driver/output driverWiring, ECM controlled components, ECM * (see below for additional information)
P1651Engine coolant blower motor relay 1 – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, supply wire, engine coolant blower motor relay 1, ECM
P1652Engine coolant blower motor relay 2 – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, supply wire, engine coolant blower motor relay 2, ECM
P1653Traction control system (TCS) – delivered torque circuitWiring open circuit/short circuit to ground/short circuit to positive, ABS control module trouble code(s) stored, ECM
P1654A/C compressor clutch relay – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, supply wire, A/C compressor clutch relay, ECM
P1655Evaporative emission (EVAP) canister purge valve – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, supply wire, EVAP canister purge valve, ECM
P1660Engine control module quad driver/output driverWiring, ECM controlled components, ECM * (see below for additional information)
P1662Cruise control inhibit circuit – circuit malfunctionWiring open circuit/short circuit to ground, cruise control motor/actuator, cruise control module, ECM
P1663Alternator warning lamp – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, supply wire, instrument panel, ECM
P1665Evaporative emission (EVAP) canister vent valve – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, supply wire, EVAP canister vent valve, ECM
P1667Fuel pump control module – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, supply wire, fuel pump control module, ECM, fuel pump relay
P1670Engine control module quad driver/output driverWiring, ECM controlled components, ECM * (see below for additional information)
P1671Malfunction indicator lamp (MIL) – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, supply wire, ECM
P1672Engine oil level warning lamp – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, supply wire, ECM
P1673Engine coolant ‘hot’ warning lamp – circuit malfunctionWiring open circuit/short circuit to ground, cooling system, ECM
P1674Tachometer – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, instrument panel, ECM
P1675Evaporative emission (EVAP) canister vent valve – circuit malfunctionWiring open circuit/short circuit to ground, EVAP canister vent valve, ECM
P1676Evaporative emission (EVAP) canister purge valve – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, supply wire, EVAP canister purge valve, ECM
P1689Traction control system (TCS) – delivered torque output circuitWiring open circuit/short circuit to ground/short circuit to positive, supply wire, ABS trouble codes stored, ECM
* Depending on model, year and equipment level, the following components may be connected to this circuit. Use of the vehicle wiring diagram is recommended to confirm which components are fitted.
A/C compressor clutch relayExhaust gas recirculation (EGR) solenoid
A/C condenser blower motor relayMalfunction indicator lamp (MIL)
Engine coolant blower motor relayTransmission shift warning light (MT)
Engine coolant ‘hot’ warning lampTorque converter clutch (TCC) solenoid
Evaporative emission (EVAP) canister purgeTransmission shift solenoids (SS)
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