| Various Models |
| Achieva 3.1L 96-97 VIN M |
Aurora 3.8L 95 VIN 1/K |
Bravada 4.3L 96-02 VIN W |
| Cutlass Ciera 3.1L 94-96 VIN M |
Cutlass Supreme 3.1L 96-97 VIN M |
Cutlass Supreme 3.4L 94-97 VIN X |
| Eighty Eight 3.8L 94-97 VIN 1/K/L |
Ninety Eight 3.8L 94-96 VIN 1/L |
Regency 3.8L 94-96 VIN 1/L |
| Silhouette 3.4L 96-97 VIN E |
Silhouette 3.8L 94-95 VIN L |
|
| Scan Code |
Fault Location |
Probable Cause |
| P0000-P0999 |
Refer to OBD-II generic trouble code table |
– |
| P1106 |
Manifold absolute pressure (MAP) sensor – circuit intermittent – voltage high |
Wiring open circuit/short circuit to positive |
| P1107 |
Manifold absolute pressure (MAP) sensor – circuit intermittent – voltage low |
Wiring open circuit/short circuit to ground |
| P1108 |
Barometric pressure (BARO) sensor/manifold absolute pressure (MAP) sensor – comparison too high |
Wiring open circuit/short circuit to positive, MAP sensor, ECM |
| P1111 |
Intake air temperature (IAT) sensor – circuit intermittent – voltage high |
Wiring open circuit/short circuit to positive, ground lead defective |
| P1112 |
Intake air temperature (IAT) sensor – circuit intermittent – voltage low |
Wiring short circuit to ground |
| P1114 |
Engine coolant temperature (ECT) sensor – circuit malfunction – voltage low |
Wiring short circuit to ground |
| P1115 |
Engine coolant temperature (ECT) sensor – circuit malfunction – voltage high |
Wiring open circuit/short circuit to positive, ground lead defective |
| P1120 |
Throttle motor position sensor 1 – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, throttle control unit, ECM |
| P1121 |
Throttle position (TP) sensor – circuit malfunction – voltage high |
Wiring open circuit/short circuit to positive, ground lead defective |
| P1122 |
Throttle position (TP) sensor – circuit malfunction – voltage low |
Wiring open circuit/short circuit to ground |
| P1133 |
Heated oxygen sensor (HO2S) 1, bank 1 – insufficient switching |
Wiring open circuit/short circuit to ground,exhaust system leaking, HO2S |
| P1134 |
Heated oxygen sensor (HO2S) 1, bank 1 – slow response |
Wiring open circuit/short circuit to ground,exhaust system leaking, HO2S |
| P1137 |
Heated oxygen sensor (HO2S) 2, – voltage low |
Wiring, oxygen sensor heater, exhaust system leaking, HO2S |
| P1138 |
Heated oxygen sensor (HO2S) 2, – voltage high |
Wiring short circuit to positive, fuel pressure high, fuel contamination, injector(s) leaking, HO2S, ECM |
| P1153 |
Heated oxygen sensor (HO2S) 1, bank 2 – insufficient switching |
Wiring, oxygen sensor heater, exhaust system leaking, HO2S |
| P1154 |
Heated oxygen sensor (HO2S) 1, bank 2 – slow response |
Wiring, oxygen sensor heater, exhaust system leaking, HO2S |
| P1171 |
Heated oxygen sensor (HO2S) 1 – voltage low |
Fuel supply blocked, injector(s) blocked, manifold absolute pressure (MAP) sensor wiring |
| P1200 |
Injector(s) – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, ECM |
| P1220 |
Throttle motor position sensor 2 – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, throttle control unit, ECM |
| P1257 |
Supercharger (SC) – over-boost |
Hoses blocked/leaking/interchanged/not connected, wiring short circuit to ground, supercharger (SC) bypass valve tight/sticking, supercharger (SC) bypass valve solenoid, ECM |
| P1271 |
Accelerator pedal position (APP) sensor 1/2 – signal variation |
Wiring, APP sensor, ECM |
| P1275 |
Accelerator pedal position (APP) sensor 1 – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, APP sensor, ECM |
| P1280 |
Accelerator pedal position (APP) sensor 2 – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, APP sensor, ECM |
| P1336 |
Crankshaft position sensor (CKP) – variation not learned |
Learning procedure not performed |
| P1350 |
Ignition control module (ICM) – bypass line monitor circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM |
| P1351 |
Ignition control module, ignition control (IC) circuit – voltage high |
Wiring open circuit, ICM, ECM |
| P1361 |
Ignition control module (ICM) – IC circuit voltage low |
Wiring open circuit/short circuit to ground/short circuit to positive, ICM, ECM |
| P1374 |
Ignition control module (ICM) – 3X reference circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, wiring routed near spark plug wires, ignition coils arcing/tracking, ICM, ECM |
| P1380 |
Rough road signal – signal error |
ABS control module trouble code(s) stored |
| P1381 |
Rough road signal – no communication from antilock brake system (ABS) CAN data bus |
Wiring open circuit, ABS system |
| P1403 |
Exhaust gas recirculation (EGR) valve solenoid 1 |
Wiring open circuit/short circuit to ground, exhaust system blocked, EGR valve, ECM |
| P1404 |
Exhaust gas recirculation (EGR) valve – stuck open |
Wiring 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 2 |
Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM |
| P1405 |
Exhaust gas recirculation (EGR) valve solenoid 3 |
Wiring open circuit/short circuit to ground, exhaust system blocked, EGR valve, ECM |
| 1406 |
Exhaust gas recirculation (EGR) valve position sensor – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, EGR valve, ECM |
| 1415 |
Secondary air injection (AIR) system |
Wiring, hoses blocked/leaking, AIR valve |
| 1416 |
Secondary air injection (AIR) system |
Wiring, hoses blocked/leaking, AIR pump relay |
| P1441 |
Evaporative emission (EVAP) system – leak detected |
Hose connection(s), EVAP canister, EVAP canister purge valve |
| P1442 |
Evaporative emission (EVAP) system vacuum switch – circuit malfunction |
Hoses blocked/leaking, wiring, EVAP canister, ECM |
| P1483 |
Engine cooling system – performance |
Cooling system, engine coolant temperature (ECT) sensor, intake air temperature (IAT) sensor |
| P1508 |
Idle air control (IAC) valve – low rpm |
Wiring open circuit/short circuit to ground/short circuit to positive, IAC valve, throttle valve tight/sticking |
| P1509 |
Idle air control (IAC) valve – high rpm |
Wiring open circuit/short circuit to ground/short circuit to positive, IAC valve, throttle valve tight/sticking |
| P1512 |
Throttle control unit – signal variation |
Wiring, throttle control unit, ECM |
| P1514 |
Intake air flow – excessive flow |
Throttle control unit, MAP sensor, CMP sensor signal, ECM |
| P1515 |
Throttle command/actual throttle position – signal variation |
Wiring, throttle valve sticking, throttle control unit, ECM |
| P1516 |
Throttle command/actual throttle position – signal variation |
Wiring, throttle valve sticking, throttle control unit, ECM |
| P1520 |
Park/neutral position (PNP) switch |
Wiring short circuit to ground, incorrectly adjusted PNP switch |
| P1523 |
Throttle control unit, throttle position during battery saving mode |
Throttle 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 motors |
A/C refrigerant pressure switch, wiring open circuit, ECM |
| P1530 |
A/C refrigerant pressure sensor – circuit malfunction |
A/C refrigerant pressure, wiring open circuit/short circuit to ground, A/C refrigerant pressure sensor, ECM |
| 1531 |
Low A/C refrigerant charge |
Low A/C refrigerant charge, wiring open circuit/short circuit to ground/short circuit to positive, A/C refrigerant low pressure switch, ECM |
| P1550 |
Cruise control stepper motor, circuit malfunction |
Wiring open circuit/short circuit to positive, cruise control module, ECM |
| P1554 |
Cruise control status circuit – high voltage |
Wiring open circuit/short circuit to ground, cruise control module, ECM |
| P1558 |
Cruise control servo – servo position sensor low |
Hose leaking, cruise control servo |
| P1561 |
Cruise control vent solenoid |
Wiring open circuit/short circuit to ground/short circuit to positive, cruise control vent solenoid, cruise control servo, ECM |
| P1562 |
Cruise control vacuum solenoid |
Wiring open circuit/short circuit to ground/short circuit to positive, cruise control servo, ECM |
| P1565 |
Cruise control servo position sensor – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, cruise control servo, ECM |
| P1567 |
Cruise control switch – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, cruise control switch, brake pedal vacuum valve, ECM |
| P1568 |
Cruise control servo – servo position sensor high |
Hose blocked, brake pedal vacuum valve, cruise control servo, cruise control cable binding |
| P1571 |
Traction control system (TCS), torque request circuit |
Wiring open circuit/short circuit to ground/short circuit to positive, ABS control module trouble code (s) stored, ECM |
| P1573 |
Data bus – antilock brake system (ABS)/traction control system (TCS) |
Wiring, ABS control module trouble codes(s) stored |
| P1599 |
Cruise control – power management mode |
Cruise control accelerator cable adjustment, hoses blocked, brake pedal vacuum valve, cruise control servo |
| P1600 |
Engine control module (ECM) |
ECM |
| P1619 |
Engine oil life monitor reset switch – circuit malfunction |
Wiring short circuit to ground, engine oil life monitor reset switch, ECM |
| P1621 |
Engine control module (ECM) – memory performance |
ECM |
| P1623 |
Engine control module (ECM) – PROM |
Insecure PROM, incorrectly coded |
| P1626 |
Immobilizer control module |
Wiring, body control module (BCM) trouble code(s) stored |
| P1627 |
Engine control module – memory performance |
ECM |
| P1629 |
Immobilizer control module – fuel enable signal |
Incorrect ignition key, wiring open circuit/short circuit to ground/short circuit to positive, immobilizer control module, ECM |
| P1630 |
Battery voltage – high/low |
Wiring, alternator |
| P1630 |
Engine control module (ECM), ignition supply voltage |
Fuse, wiring open circuit, ECM |
| P1631 |
Engine control module (ECM) – incorrect immobilizer code |
Incorrect key, immobilizer code not programmed |
| P1633 |
Engine control module (ECM), ignition supply voltage |
Fuse, wiring open circuit, ECM |
| P1635 |
Sensor supply voltage – circuit A malfunction |
Wiring short circuit to positive, ground wiring open circuit, TP sensor, MAP sensor, EGR valve, ECM |
| P1639 |
Sensor supply voltage – circuit B malfunction |
Wiring short circuit to ground/positive, ground wiring open circuit, A/C refrigerant pressure sensor, ECM |
| P1640 |
Engine control module quad driver/output driver |
Wiring, ECM controlled components, ECM *(see below for additional information) |
| P1641 |
Malfunction indicator lamp (MIL) – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, MIL, supply wire, ECM |
| P1643 |
Fuel pump control module – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, fuel pump control module, ECM |
| P1645 |
Supercharger (SC) control valve solenoid – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, SC control valve solenoid, ECM |
| P1650 |
Engine control module, quad driver/output driver |
Wiring, ECM controlled components, ECM * (see below for additional information) |
| P1651 |
Engine coolant blower motor relay 1 – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, engine coolant blower motor relay 1, ECM |
| P1652 |
Engine coolant blower motor relay 2 – circuit malfunction |
Wiring 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 malfunction |
Wiring 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 circuit |
Wiring open circuit/short circuit to ground/short circuit to positive, ABS control module trouble code(s) stored, ECM |
| P1654 |
A/C compressor clutch relay – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, A/C compressor clutch relay, ECM |
| P1655 |
Evaporative emission (EVAP) canister purge valve – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, EVAP canister purge valve, ECM |
| P1662 |
Cruise control inhibit circuit – circuit malfunction |
Wiring open circuit/short circuit to ground, cruise control motor/actuator, cruise control module, ECM |
| P1663 |
Alternator warning lamp – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, instrument panel, ECM |
| P1665 |
Evaporative emission (EVAP) canister vent valve – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, supply wire, EVAP canister vent valve, ECM |
| P1670 |
Engine control module quad driver/output driver |
Wiring, ECM * (see below for additional information) |
| P1671 (Cutlass Supreme 3.1L) |
Engine oil change warning lamp – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, engine oil change warning lamp, ECM |
| P1671 |
Malfunction indicator lamp (MIL) – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, MIL, ECM |
| P1672 |
Engine oil level warning lamp – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, instrument panel, ECM |
| P1673 |
Engine coolant ‘hot’ warning lamp – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, instrument panel, cooling system, ECM |
| P1674 |
Tachometer – circuit malfunction |
Wiring open circuit/short circuit to ground/short circuit to positive, instrument panel, ECM |
| P1675 |
Evaporative emission (EVAP) canister vent valve – circuit malfunction |
Wiring open circuit/short circuit to ground, EVAP canister vent valve, ECM |
| P1676 |
Evaporative emission (EVAP) canister purge valve – circuit malfunction |
Wiring open circuit/short circuit to ground, EVAP canister purge valve, ECM |
| P1680 |
Engine control module (ECM) |
ECM |
| P1681 |
Engine control module (ECM) |
ECM |
| P1682 |
Engine control module (ECM), ignition supply voltage |
Fuse, wiring open circuit, ECM |
| P1683 |
Engine control module (ECM) |
ECM |
| P1860 |
Torque converter clutch (TCC) solenoid – circuit malfunction |
Wiring open circuit/short circuit to ground, TCC solenoid, ECM |
| U1026 |
Transmission control module (TCM)/four wheel drive control module, CAN data bus – communication malfunction |
Wiring, BCM |
| U1041 |
Antilock brake system (ABS)/traction control system (TCS), CAN data bus – communication malfunction |
Wiring, ABS/TCS trouble codes stored |
| U1064 |
Body control module (BCM), CAN data bus – communication malfunction |
Wiring, BCM |
