GM OBD/OBD2 Codes >> GM Achieva/Aurora/Bravada/Cutlass/Eighty Eight/Ninety Eight/Regency/Silhouette

GM

Various Models
Achieva 3.1L 96-97 VIN MAurora 3.8L 95 VIN 1/KBravada 4.3L 96-02 VIN W
Cutlass Ciera 3.1L 94-96 VIN MCutlass Supreme 3.1L 96-97 VIN MCutlass Supreme 3.4L 94-97 VIN X
Eighty Eight 3.8L 94-97 VIN 1/K/LNinety Eight 3.8L 94-96 VIN 1/LRegency 3.8L 94-96 VIN 1/L
Silhouette 3.4L 96-97 VIN ESilhouette 3.8L 94-95 VIN L
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
P1108Barometric pressure (BARO) sensor/manifold absolute pressure (MAP) sensor – comparison too highWiring open circuit/short circuit to positive, MAP sensor, ECM
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
P1120Throttle motor position sensor 1 – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, throttle control unit, ECM
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, bank 1 – insufficient switchingWiring open circuit/short circuit to ground,exhaust system leaking, HO2S
P1134Heated oxygen sensor (HO2S) 1, bank 1 – slow responseWiring open circuit/short circuit to ground,exhaust system leaking, HO2S
P1137Heated oxygen sensor (HO2S) 2, – voltage lowWiring, oxygen sensor heater, exhaust system leaking, HO2S
P1138Heated oxygen sensor (HO2S) 2, – voltage highWiring short circuit to positive, fuel pressure high, fuel contamination, injector(s) leaking, HO2S, ECM
P1153Heated oxygen sensor (HO2S) 1, bank 2 – insufficient switchingWiring, oxygen sensor heater, exhaust system leaking, HO2S
P1154Heated oxygen sensor (HO2S) 1, bank 2 – slow responseWiring, oxygen sensor heater, exhaust system leaking, HO2S
P1171Heated oxygen sensor (HO2S) 1 – voltage lowFuel supply blocked, injector(s) blocked, manifold absolute pressure (MAP) sensor wiring
P1200Injector(s) – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, ECM
P1220Throttle motor position sensor 2 – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, throttle control unit, ECM
P1257Supercharger (SC) – over-boostHoses blocked/leaking/interchanged/not connected, wiring short circuit to ground, supercharger (SC) bypass valve tight/sticking, supercharger (SC) bypass valve solenoid, ECM
P1271Accelerator pedal position (APP) sensor 1/2 – signal variationWiring, APP sensor, ECM
P1275Accelerator pedal position (APP) sensor 1 – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, APP sensor, ECM
P1280Accelerator pedal position (APP) sensor 2 – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, APP sensor, ECM
P1336Crankshaft position sensor (CKP) – variation not learnedLearning procedure not performed
P1350Ignition control module (ICM) – bypass line monitor 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
P1361Ignition control module (ICM) – IC circuit voltage lowWiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM
P1374Ignition control module (ICM) – 3X reference circuit malfunctionWiring 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
P1404Exhaust gas recirculation (EGR) valve – stuck openWiring open circuit/short circuit to positive, exhaust gas recirculation (EGR) valve position sensor, EGR solenoid
P1404 (Cutlass Supreme 3.4L)Exhaust gas recirculation (EGR) valve solenoid 2Wiring open circuit/short circuit to ground, supply wire, 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
1415Secondary air injection (AIR) systemWiring, hoses blocked/leaking, AIR valve
1416Secondary air injection (AIR) systemWiring, hoses blocked/leaking, AIR pump relay
P1441Evaporative emission (EVAP) system – leak detectedHose connection(s), EVAP canister, EVAP canister purge valve
P1442Evaporative emission (EVAP) system vacuum switch – circuit malfunctionHoses blocked/leaking, wiring, EVAP canister, ECM
P1483Engine cooling system – performanceCooling system, engine coolant temperature (ECT) sensor, intake air temperature (IAT) sensor
P1508Idle air control (IAC) valve – low rpmWiring open circuit/short circuit to ground/short circuit to positive, IAC valve, throttle valve tight/sticking
P1509Idle air control (IAC) valve – high rpmWiring open circuit/short circuit to ground/short circuit to positive, IAC valve, throttle valve tight/sticking
P1512Throttle control unit – signal variationWiring, throttle control unit, ECM
P1514Intake air flow – excessive flowThrottle control unit, MAP sensor, CMP sensor signal, ECM
P1515Throttle command/actual throttle position – signal variationWiring, throttle valve sticking, throttle control unit, ECM
P1516Throttle command/actual throttle position – signal variationWiring, throttle valve sticking, throttle control unit, ECM
P1520Park/neutral position (PNP) switchWiring short circuit to ground, incorrectly adjusted PNP switch
P1523Throttle control unit, throttle position during battery saving modeThrottle valve movement restricted, throttle control unit, ECM
P1530 (Aurora/Eighty Eight/Ninety Eighy/Regency/Silhouette 3.8L)A/C refrigerant pressure switch – engine coolant blower motorsA/C refrigerant pressure switch, wiring open circuit, ECM
P1530A/C refrigerant pressure sensor – circuit malfunctionA/C refrigerant pressure, wiring open circuit/short circuit to ground, 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
P1550Cruise control stepper motor, circuit malfunctionWiring open circuit/short circuit to positive, cruise control module, ECM
P1554Cruise control status circuit – high voltageWiring open circuit/short circuit to ground, cruise control module, ECM
P1558Cruise control servo – servo position sensor lowHose leaking, cruise control servo
P1561Cruise control vent solenoidWiring open circuit/short circuit to ground/short circuit to positive, cruise control vent solenoid, 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 sensor – circuit malfunctionWiring 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
P1599Cruise control – power management modeCruise control accelerator cable adjustment, hoses blocked, brake pedal vacuum valve, cruise control servo
P1600Engine control module (ECM)ECM
P1619Engine oil life monitor reset switch – circuit malfunctionWiring short circuit to ground, engine oil life monitor reset switch, ECM
P1621Engine control module (ECM) – memory performanceECM
P1623Engine control module (ECM) – PROMInsecure PROM, incorrectly coded
P1626Immobilizer control moduleWiring, body control module (BCM) trouble code(s) stored
P1627Engine control module – memory performanceECM
P1629Immobilizer control module – fuel enable signalIncorrect ignition key, wiring open circuit/short circuit to ground/short circuit to positive, immobilizer control module, ECM
P1630Battery voltage – high/lowWiring, alternator
P1630Engine control module (ECM), ignition supply voltageFuse, wiring open circuit, ECM
P1631Engine control module (ECM) – incorrect immobilizer codeIncorrect key, immobilizer code not programmed
P1633Engine control module (ECM), ignition supply voltageFuse, wiring open circuit, ECM
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)
P1641Malfunction indicator lamp (MIL) – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, MIL, supply wire, 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
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
P1653 (Silhouette 3.4L)Fuel gauge tank sensor – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, instrument panel, ECM
P1653 (Eighty Eight/Ninety Eight/Regency 3.8L)Traction 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
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
P1670Engine control module quad driver/output driverWiring, ECM * (see below for additional information)
P1671 (Cutlass Supreme 3.1L)Engine oil change warning lamp – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, engine oil change warning lamp, ECM
P1671 Malfunction indicator lamp (MIL) – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, MIL, ECM
P1672Engine oil level warning lamp – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, instrument panel, ECM
P1673Engine coolant ‘hot’ warning lamp – circuit malfunctionWiring open circuit/short circuit to ground/short circuit to positive, instrument panel, 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, EVAP canister purge valve, ECM
P1680Engine control module (ECM)ECM
P1681Engine control module (ECM)ECM
P1682Engine control module (ECM), ignition supply voltageFuse, wiring open circuit, ECM
P1683Engine control module (ECM)ECM
P1860Torque converter clutch (TCC) solenoid – circuit malfunctionWiring open circuit/short circuit to ground, TCC solenoid, ECM
U1026Transmission control module (TCM)/four wheel drive control module, CAN data bus – communication malfunctionWiring, BCM
U1041Antilock brake system (ABS)/traction control system (TCS), CAN data bus – communication malfunctionWiring, ABS/TCS trouble codes stored
U1064Body control module (BCM), CAN data bus – communication malfunctionWiring, BCM
* 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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