| 91-92 4.5L VIN 8 |
|---|
| Trouble code | Fault location | Probable cause |
| E012 | Distributor -no reference signal | Wiring open circuit/ short circuit to grounc. positive, ICM, CKP, ECM |
| E013 | Oxygen sensor (028) 1, bank 1 | Wiring open circuit/short circuit to positivfo 02S, ECM |
| E014 | Engine coolant temperature (ECT) sensor -voltage low | Wiring short circuit to ground, ECT sensor ECM |
| E015 | Engine coolant temperature (ECT) sensor -voltage high | Wiring open circuit, ECT sensor, ECM |
| E016 | Battery voltage -high/low | Wiring, alternator, ECM |
| E017 | Oxygen sensor (028) 1, bank 2 | Wiring open circuit/short circuit to positive.. 025, ECM |
| E019 | Fuel pump circuit -short circuit | Wiring short circuit to positive, fuel pump relay, engine oil pressure switch, ECM |
| E020 | Fuel pump circuit -open circuit | Wiring open circuit/short circuit to ground positive, fuel pump relay, engine oil pressure switch, ECM |
| E021 | Throttle position (TP) sensor -voltage high | Wiring open circuit/short circuit to positive TP sensor, ECM |
| E022 | Throttle position (TP) sensor -voltage low | Wiring open circuit/short circuit to ground. TP sensor, ECM |
| E023 | Ignition control module (ICM) -circuit malfunction | Wiring open circuit/short circuit to ground. CKP sensor, ICM |
| E024 | Vehicle speed sensor (V8S) | Wiring open circuit/short circuit to ground. V5S, ECM |
| E026 | Closed position throttle (CPT) switch -short circuit | Wiring, CPT switch, ECM |
| E027 | Closed position throttle (CPT) switch -open circuit | Wiring, CPT switch, ECM |
| E030 | Idle speed control (ISC) actuator | Wiring, misfire, throttle valve tight/sticking, intake system leaking, TPS, ISC actuator, ECM |
| E031 | Manifold absolute pressure (MAP) sensor -short circuit | Wiring short circuit to positive, MAP sensor |
| E032 | Manifold absolute pressure (MAP) sensor -open circuit | Wiring open circuit/short circuit to ground, MAP sensor, ECM |
| E034 | Manifold absolute pressure (MAP) sensor -voltage high | Wiring open circuit/short circuit to positive, MAP sensor |
| E037 | Intake air temperature (IAT) sensor -short circuit | Wiring short circuit, IAT sensor, ECM |
| E038 | Intake air temperature (IAT) sensor -open circuit | Wiring open circuit, IAT sensor, ECM |
| E039 | Torque converter clutch (TCC) -slipping | Wiring open circuit/short circuit to ground, supply wire, transmission internal wiring, TCC solenoid, transmission mechanical fault, ECM |
| E040 | Power steering pressure (P8P) switch -open circuit | Wiring open circuit/short circuit to ground/ positive, P5P switch, ECM |
| E041 | Camshaft position (CMP) sensor -circuit malfunction | Wiring open circuit/short circuit to ground, CMP sensor, ECM |
| E042 | Oxygen sensor (028) 1, bank 2 -mixture lean | Wiring short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, 025, ECM |
| E043 | Oxygen sensor (028) 1, bank 2 -mixture rich | Wiring open circuit, fuel pressure high, injector(s) leaking, 025 contamination, EVAP canister purge valve, MAP sensor hoses, 025, ECM |
| E044 | Oxygen sensor (028) 1, bank 1 -mixture lean | Wiring short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, 025, ECM |
| E045 | Oxygen sensor (028) 1, bank 1 -mixture rich | Wiring open circuit, fuel pressure high, injector(s) leaking, 025 contamination, EVAP canister purge valve, MAP sensor hoses, 025, ECM |
| E046 | Long term fuel trim -imbalance bank 1/bank 2 | Injector(s) leaking, H025, intake/exhaust system leaking, spark plug(s), ignition system |
| E047 | Body control module (BCM), CAN data bus -communication malfunction | Wiring, BCM |
| E050 | Transmission 2nd gear pressure switch | Wiring open circuit/short circuit to ground, vacuum modulator/hoses, transmission mechanical fault |
| E051 | Engine control module (ECM) -PROM | Insecure PROM, incorrect PROM, ECM |
| E052 | Engine control module (ECM) -KAM reset | Battery disconnected, ECM disconnected |
| E053 | Distributor -intermittent reference signal | Wiring open circuit/ short circuit to ground/ positive, CKP |
| E055 | Throttle position (TP) sensor -incorrectly adjusted | Throttle valve tight/sticking, TP sensor incorrectly adjusted |
| E058 | Immobilizer control module -fuel enable signal | Incorrect ignition key, wiring open circuit/ short circuit to ground/short circuit to positive, immobilizer control module, ECM |
| E060 | Park/neutral input with cruise control engaged | Driver error, wiring open circuit/short circuit to ground, PNP switch |
| E061 | Cruise control vent solenoid | Wiring open circuit/short circuit to ground/ short circuit to positive, cruise control vent solenoid, cruise control servo, ECM |
| E062 | Cruise control vacuum solenoid | Wiring open circuit/short circuit to ground/ short circuit to positive, cruise control vacuum solenoid, cruise control servo, ECM |
| E063 | Cruise control -set speed/vehicle speed mismatch | Wiring open circuit/short circuit to ground/ short circuit to positive, hoses leaking, cruise control servo, ECM |
| E064 | Cruise control -acceleration too high | Slippery road conditions |
| E065 | Cruise control servo position sensor -circuit malfunction | Wiring open circuit/short circuit to groundl short circuit to positive, cruise control servo, ECM |
| E066 | Cruise control -engine speed too high | Slippery road conditions, transmission mechanical fault |
| E067 | Cruise control switch -circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, cruise control switch, ECM |
| E068 | Cruise control servo position sensor -range | Wiring, hoses blocked/leaking, brake pedal vacuum valve, cruise control servo, ECM |
| E069 | Cruise control disabled -traction control system (TCS) active | Slippery road conditions |
| E070 | Throttle position (TP) sensor -intermittent signal | Wiring open circuit/short circuit to groundl short circuit to positive, TP sensor |
| E071 | Manifold absolute pressure (MAP) sensor -intermittent signal | Wiring open circuit/short circuit to groundl short circuit to positive, MAP sensor |
| E073 | Engine coolant temperature (ECT) sensor -intermittent signal | Wiring open circuit/short circuit to groundl short circuit to positive, ECT sensor |
| E074 | Intake air temperature (IAT) sensor -intermittent signal | Wiring open circuit/short circuit to groundl short circuit to positive, IAT sensor |
| E075 | Vehicle speed sensor (VSS) -intermittent signal | Wiring open circuit/short circuit, VSS |
| E080 | Fuel system rich | Fuel pressure high, injector(s) leaking, EVAP system |
| E085 | Throttle body service required | throttle valve tight/sticking, TP sensor, ISC actuator |
| E090 | Brake pedal position (BPP) switch for torque converter clutch (TCC) | Wiring open circuit/short circuit to ground, incorrectly adjusted, BPP switch, ECM |
| E091 | Park/neutral position (PNP) switch -circuit malfunction | Wiring open circuit/short circuit to ground, incorrectly adjusted, PNP switch, ECM |
| E096 | Torque converter clutch (TCC) -over stressed | ECM trouble codes stored, driver error |
| E097 | Transmission shifted from PIN to D/R at high throttle angle | Driver error, wiring, TR switch |
| E098 | Transmission shifted from PIN to D/R in ISC range | Driver error, wiring, TR switch |
| E099 | Cruise control servo -position high after disengagement | Wiring, throttle valve tight/sticking, hoses blocked/leaking, cruise control servo |
