| 1992-1993 3.8L VIN L |
|---|
| Flash code | Fault location | Probable cause |
| 12 | Start of diagnosis | No engine speed (RPM) signal received |
| 13 | Oxygen sensor (02S) | Wiring open circuit, 02S, ECM |
| 14 | Engine coolant temperature (ECT) sensor – high temperature indicated | Wiring short circuit to ground, ECT sensor, ECM |
| 15 | Engine coolant temperature (ECT) sensor – low temperature indicated | Wiring open circuit, ECT sensor, ECM |
| 16 | Battery voltage – high/low | Wiring, alternator |
| 17 | Spark reference circuit | Wiring open circuit/short circuit to ground, ICM, ECM |
| 18 | Camshaft position (CMP) signal/fuel control signal | Wiring open circuit/short circuit to ground, CKP sensor, CMP sensor, ICM, ECM |
| 21 | Throttle position (TP) sensor – voltage high | Wiring open circuit/short circuit to positive, TP sensor, ECM |
| 22 | Throttle position (TP) sensor -voltage low | Wiring open circuit/short circuit to ground, TP sensor, ECM |
| 23 | Intake air temperature (IAT) sensor – low temperature indicated | Wiring open circuit, IAT sensor, ECM |
| 24 | Vehicle speed sensor (VSS) | Wiring open circuit/short circuit to ground, VSS, ECM |
| 25 | Intake air temperature (IAT) sensor – high temperature indicated | Wiring short circuit to ground, IAT sensor, ECM |
| 26 | Engine control module (ECM), quad driver/ output driver -circuit malfunction | Wiring, ECM controlled components, ECM |
| 31 | Park/neutral position (PNP) switch | Wiring short circuit to ground, incorrectly adjusted, PNP switch, ECM |
| 32 | Exhaust gas recirculation (EGR) solenoid | Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM |
| 34 | Mass airflow (MAF) sensor | Wiring open circuit/short circuit to ground/short circuit to positive, MAF sensor, ECM |
| 36 | Shift solenoids (SS) | Wiring open circuit/short circuit to ground, SS |
| 38 | Brake pedal position (BPP) switch | Wiring open circuit/short circuit to ground/short circuit to positive, incorrectly adjusted, BPP switch, ECM |
| 39 | Torque converter clutch (TCC) | Wiring open circuit/short circuit to ground, TCC solenoid, BPP switch incorrectly adjusted, transmission mechanical fault, ECM |
| 41 | Camshaft position (CMP) sensor | Wiring, CMP sensor, mechanical fault, ECM |
| 42 | Ignition control module (ICM) – circuit malfunction | Wiring open circuit/short circuit to ground, ICM, ECM |
| 43 | Knock sensor (KS) | Wiring open circuit/short circuit to ground/short circuit to positive, KS incorrectly fitted, KS, insecure PROM, ECM |
| 44 | Oxygen sensor (02S) – mixture lean | Wiring open circuit/short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, 02S, ECM |
| 45 | Oxygen sensor (02S) – mixture rich | Wiring open circuit, fuel pressure high, injector(s) leaking, 02S, 02S contamination, EVAP canister purge valve, TP sensor, EGR system, ECM |
| 51 | Engine control module (ECM) – PROM | Insecure PROM, incorrect PROM, ECM |
| 53 | Exhaust gas recirculation (EGR) valve solenoid 1 | Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM |
| 54 | Exhaust gas recirculation (EGR) valve solenoid 2 | Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM |
| 55 | Exhaust gas recirculation (EGR) valve solenoid 3 | Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM |
| 56 | Engine control module quad driver/output driver | Wiring, ECM controlled components, ECM |
| 58 | Immobilizer control module – fuel enable signal | Incorrect ignition key, wiring open circuit/short circuit to ground/short circuit to positive, immobilizer control module, ECM |
| 61 | Cruise control vent solenoid | Wiring open circuit/short circuit to ground/short circuit to positive, cruise control vent solenoid, cruise control servo, ECM |
| 62 | Cruise control vacuum solenoid | Wiring open circuit/short circuit to ground/short circuit to positive, cruise control vacuum solenoid, cruise control servo, ECM |
| 63 | Cruise control servo – servo position sensor low | Hoses leaking, cruise control servo |
| 65 | Cruise control servo position sensor – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, cruise control servo, ECM |
| 66 | 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 |
| 67 | Cruise control switch – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, cruise control switch, ECM |
| 68 | Cruise control servo – servo position sensor high | Hoses blocked/leaking, brake pedal vacuum valve, cruise control servo |
| 69 | A/C refrigerant pressure switch – engine coolant blower motors | Wiring open circuit, A/C refrigerant pressure switch, ECM |
| 99 | Cruise control – power management mode | Cruise control accelerator cable adjustment, hoses blocked, brake pedal vacuum valve, cruise control servo |
