Oldsmobile OBD/OBD2 Codes >> Achieva – Alero – Cutlass – Eighty Eight – Intrigue – Silhouette

ModelYearEngine identificationSystem
Achieva 3.1 L1998VIN  position 8 = M  GM
Alero 3.4L1999-04VIN  position 8 = E  GM
Cutlass 3.1L1997-99VIN  position 8 = M  GM
Eighty Eight 3.8L1998-99VIN  position 8 =  1/K  GM
Intrigue 3.8L1998-00VIN  position 8 = KGM
Silhouette 3.4L1998-04VIN  position 8 = EGM

General information

  • Malfunction indicator lamp (MIL) will illuminate or flash if certain faults are recorded.
  • ECM operates in backup mode if sensors fail, to enable vehicle to be driven to repair shop.

Accessing

• Trouble codes can only be displayed by using a Scan Tool connected to the data link connector o Achieva/Alero/Cutlass 1 o Eighty Eight/lntrigue/Silhouette 2

Erasing

• After the faults have been rectified, the manufacturer recommends that trouble codes are erased by using a Scan Tool connected to the data link connector (DLC).

Trouble code  identification

Scan codeFault locationProbable cause
PO, P2,UORefer to OBO-II trouble code tables–
P1106Manifold absolute pressure (MAP) sensor circuit intermittent -voltage highWiring open circuit/short circuit to ground! short circuit to positive
P1107Manifold absolute pressure (MAP) sensor circuit intermittent -voltage lowWiring short circuit to ground
P1111Intake air temperature (IAT) sensor -circuit intermittent -voltage highWiring open circuit, 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, ground lead defective
P1121Throttle position (TP) sensor -circuit malfunction -voltage highWiring short circuit to positive, ground lead defective
P1122Throttle position (TP) sensor -circuit malfunction -voltage lowWiring open circuit/short circuit to ground
P1133Heated oxygen sensor (H02S) 1, bank 1insufficient switchingWiring, oxygen sensor heater, exhaust system leaking, H02S
P1134Heated oxygen sensor (H02S) 1, bank 1 slow responseWiring, oxygen sensor heater, exhaust system leaking, H02S
P1189Engine oil pressure waming switch -circuit malfunctionWiring open circuit, engine oil pressure warning switch, ECM
P1257Supercharger (SC) -over-boostHoses blockedlleaking!interchanged!not connected, wiring short circuit to ground,supercharger (SC) bypass valve tight/ sticking, supercharger (SC) bypass valve solenoid, ECM
P1336Crankshaft position (CKP) sensor -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 (ICM) -IC circuit, voltage highWiring open circuit, ICM, ECM
P1352Ignition control module (lCM) -bypass line,voltage highWiring open circuit/short circuit to ground! short circuit to positive, ICM, ECM
P1361Ignition control module (ICM), IC circuit voltage lowWiring short circuit to ground, ICM, ECM
P1362Ignition control module (ICM) -bypassllC circuit,voltage lowWiring short circuit to ground, 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 errorASS control module trouble code(s) stored
P1381Rough road signal -no communication from ASS CAN data busWiring open circuit, ASS system
P1404Exhaust gas recirculation (EGR) valve -stuck openWiring open circuit/short circuit to positive, exhaust gas recirculation (EGR) valve position sensor, EGR solenoid
P1441Evaporative emission (EVAP) system -leak detectedHose connection(s), EVAP canister, EVAP canister purge valve
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
P1546A/C compressor clutch relay -circuit malfunctionWiring open circuit/short circuit to groundl short circuit to positive, A/C compressor clutch relay, ECM
P1554Cruise control status circuit -high voltageWiring open circuit/short circuit to ground, cruise control module, ECM
P1571Traction control system (TCS), torque request circuitWiring open circuit/short circuit to groundl short circuit to positive, ASS control module trouble code(s) stored, ECM
P1573Data bus -antilock brake system (ASS)I traction control system (TCS)Wiring, ASS control module trouble code(s) stored
P1585Cruise control system -inhibit output circuitWiring open circuit/short circuit to groundl short circuit to positive, supply wire, cruise controlmotor/actuator, ECM
P1600Engine control module (ECM)ECM
P1602CAN data bus -anti-lock brake system (ASS)I traction control system (TCS)Wiring, ASS control module trouble code(s) stored
P1605CAN data bus -A/CWiring, A/C system trouble code(s) stored
P1610CAN data bus -body control module (SCM)Wiring, body control module (SCM) trouble code(s) stored
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
P1626Data bus, immobilizerWiring, body control module (SCM) trouble code(s) stored
P1627Engine control module (ECM) -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
P1630Engine control module (ECM), immobilizer code learning modeImmobilizer code not programmed
P1631Engine control module (ECM) -incorrect immobilizer code –Incorrect key, immobilizer code not programmed
P1635Sensor supply voltage -circuit A malfunctionWiring short circuit to ground/positive, ground wiring open circuit, TP sensor, MAP sensor, EGR valve position sensor, ECM
P1637Alternator ‘L’ terminal -circuit malfunctionWiring open circuit/short circuit to ground, alternator, battery temperature sensor, ECM
P1639Sensor supply voltage -circuit B malfunctionWiring short circuit to ground/positive, ground wiring open circuit, A/C refrigerant pressure sensor, fuel tank pressure (FTP) sensor, ECM
P1640Engine control module (ECM) quad driver/ outputdriverWiring, ECM controlled components, ECM D
P1641A/C compressor clutch relay -circuit malfunctionWiring open circuit/short circuit to ground, supply wire, A/C compressor clutch relay, ECM
P1644Traction control system (lCS) delivered torque output circuitWiring open circuit/short circuit to ground/ short circuit to positive, ASS trouble codes stored, ECM
P1646Supercharger (SC) control valve solenoid circuit malfunctionWiring open circuit/short circuit to ground/ shortcircuit to positive, SC control valve solenoid, ECM
P1650Engine control module (ECM) quad driver/ output driverWiring, ECM controlled components, ECM D
P1651Engine coolant blower motor relay 1 -circuit malfunctionWiring open circuit/short circuit to ground, supply wire, engine coolant blower motor relay, ECM
P1652Engine coolant blower motor relay 2 -circuitmalfunctionWiring open circuit/short circuit to ground, supplywire, engine coolant blower motor relay(s), ECM
P1653 0Fuel gauge tank sensor -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, instrument panel, ECM
P1653 f)Engine oil level warning lamp -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, instrument panel, ECM
P1660Engine control module (ECM) quad driver/ outputdriverWiring, ECM controlled components, ECM D
P1662Cruise control inhibit circuit -circuit malfunctionWiring open circuit/short circuit to ground, cruisecontrol motor/actuator, cruise control module,ECM
P1663Alternator warning lamp -circuit malfunctionWiring open circuit/short circuit to ground/ short circuit to positive, instrument panel, ECM
P1665Evaporative emission (EVAP) canister vent valve-circuit malfunctionWiring open circuit/short circuit to ground, EVAPcanister vent valve, ECM
P1670Engine control module (ECM) quad driver!Wiring, ECM controlled components, ECM D
output driver
P1671Malfunction indicator lamp (MIL) -circuitWiring open circuit/short circuit to ground!
malfunctionshort circuit to positive, MIL, ECM
P1672Engine oil level waming lamp -circuitWiring open circuit/short circuit to groundl
malfunctionshort circuit to positive, instrument panel,
ECM
P1673Engine coolant ‘hot’ waming lamp -circuitWiring open circuit/short circuit to ground!
malfunctionshort circuit to positive, instrument panel,
cooling system, ECM
P1676Evaporative emission (EVAP) canister purgeWiring open circuit/short circuit to ground,
valve -circuit malfunctionEVAP canister purge valve, ECM
P1680Engine control module (ECM) -memoryECM
performance
P1681Engine control module (ECM) -memoryECM
performance
P1683Engine control module (ECM) -memoryECM
performance
P1689Traction control system (TCS) -deliveredWiring open circuit/short circuit to groundl
torque output circuitshort circuit to positive, ASS trouble codes
stored, ECM
P1810Transmission fluid pressure (TFP) switch –Fluid level low, wiring open circuit/short
manual valve positioncircuit to ground, selector lever linkage
incorrectly adjusted, ECM
P1811Shift time too long -adaptation limit reachedFluid level low, transmission mechanical
fault
P1860Torque converter clutch (TCC) solenoid –Wiring open circuit/short circuit to ground,
circuit malfunctionTCC solenoid, ECM
P1887Torque converter clutch (TCC) releaseWiring open circuit, TCC solenoid release
switch -circuit malfunctionswitch, ECM