| 92 3.1, 5.0, 5.7L VIN T, E/F, 8 |
|---|
| Flash Code | Fault Location | Probable Cause |
| 12 | Start of diagnosis | No engine speed (RPM) signal received |
| 13 | Oxygen sensor (O2S)/heated oxygen sensor (HO2S) | Wiring open circuit, O2S/HO2S, 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 | Vehicle speed sensor (VSS) buffer – signal low | Wiring, VSS buffer, ECM |
| 17 | Camshaft position (CMP) sensor – circuit malfunction | Wiring, CMP sensor, mechanical fault, 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 | Wiring open circuit, IAT sensor, ECM |
| 24 | Vehicle speed sensor (VSS) | Wiring open circuit/short circuit to ground, PROM, VSS, ECM |
| 25 | Intake air temperature (IAT) sensor – high temperature | Wiring short circuit to ground, IAT sensor, ECM |
| 28 | Transmission range (TR) switch | Wiring open circuit/short circuit to ground/short circuit to positive, TR switch, ECM |
| 31 | Engine speed control system – malfunction | Wiring, throttle valve motor, throttle valve control module, ECM |
| 32 | Exhaust gas recirculation (EGR) solenoid | Wiring open circuit/short circuit to ground, EGR valve, ECM |
| 33 | Manifold absolute pressure (MAP) sensor – circuit malfunction | Wiring open circuit/short circuit to positive, hose blocked/leaking, MAP sensor, ECM |
| 34 | Manifold absolute pressure (MAP) sensor – circuit malfunction | Wiring open circuit/short circuit to ground, MAP sensor, ECM |
| 35 | Idle air control (IAC) valve | Wiring, IAC valve, intake system leaking, fuel system, PCV valve, A/C system, mechanical fault, ECM |
| 36 | Auxiliary idle air control valve | Wiring, idle air control valve, vacuum pipes, ECM |
| 37 | Brake pedal position (BPP) switch for torque converter clutch (TCC) | Wiring open circuit/short circuit to ground, incorrectly adjusted BPP switch, BPP switch, ECM |
| 38 | Brake pedal position (BPP) switch/ torque converter clutch (TCC) | Wiring open circuit/short circuit to ground, supply wire, BPP switch, TCC switch, ECM |
| 39 | Brake pedal position (BPP) switch – stuck OFF | Wiring, BPP switch, ECM |
| 41 | Engine control module (ECM), programming – malfunction | ECM incorrect programming, ECM failure |
| 42 | Ignition control module (ICM) – electronic spark timing (EST)/ignition control (IC)/bypass circuit malfunction | Wiring open circuit/short circuit to ground, ICM, ECM |
| 43 | Knock sensor (KS) | Wiring open circuit/short circuit to ground/short to positive, KS, PROM, ECM |
| 44 | Oxygen sensor (O2S)/heated oxygen sensor (HO2S) – mixture lean | Wiring short circuit to ground, fuel pressure low, MAP sensor, misfire, fuel contamination, exhaust system leaking, O2S/HO2S, ECM |
| 45 | Oxygen sensor (O2S)/heated oxygen sensor (HO2S) – mixture rich | Fuel pressure high, injector(s) leaking, O2S contamination, EVAP canister purge valve, TP sensor, MAP sensor, EGR system, O2S/H2OS, ECM |
| 46 | Immobilizer system, code – malfunction | Incorrect key, ECM |
| 51 | Engine control module (ECM) – PROM | Insecure PROM, incorrect PROM, ECM |
| 52 | Engine control module (ECM) – malfunction | ECM |
| 53 | System Voltage – high | Alternator |
| 53 (Camaro 5.0L) | Immobilizer system, code – malfunction | Incorrect key, ECM |
| 54 | Fuel pump circuit – voltage low | Wiring open circuit/short circuit to ground, fuel pump relay, fuel pump, engine oil pressure warning lamp switch, ECM |
| 55 | Engine control module (ECM) | Ground wiring open circuit, insecure PROM, ECM |
| 58 | Transmission fluid temperature (TFT) sensor – voltage low | Wiring short circuit to ground, TFT sensor, ECM |
| 59 | Transmission fluid temperature (TFT) sensor -voltage high | Wiring open circuit, TFT sensor, ECM |
| 61 | Oxygen sensor (O2S) | O2S |
| 62 | Transmission gear switch signal circuit | Wiring open circuit/short circuit to ground, 2nd gear switch, 3rd gear switch, ECM |
| 66 | A/C refrigerant pressure sensor – circuit malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, A/C refrigerant pressure sensor, ECM |
| 68 | Torque converter clutch (TCC) – slipping | Wiring, TCC solenoid, transmission mechanical fault, ECM |
| 69 | Torque converter clutch (TCC) solenoid – stuck ON | Wiring open circuit/short circuit to ground, transmission internal wiring, TCC solenoid, transmission mechanical fault, ECM |
| 70 | A/C refrigerant pressure sensor – voltage high | Wiring open circuit/short circuit to positive, A/C refrigerant pressure sensor, ECM |
| 72 | Vehicle Speed Sensor (VSS) | Wiring open circuit/short circuit to ground, VSS, ECM |
| 73 | Transmission fluid pressure (TFP) control solenoid – circuit malfunction | Wiring, poor connection, TFP solenoid |
| 74 | Transmission input shaft speed sensor – circuit malfunction | Wiring, input shaft speed sensor, ECM |
| 75 | Exhaust gas recirculation (EGR) valve solenoid 1 | Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM |
| 76 | Exhaust gas recirculation (EGR) valve solenoid 2 | Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM |
| 77 | Exhaust gas recirculation (EGR) valve solenoid 3 | Wiring open circuit/short circuit to ground, supply wire, EGR valve, ECM |
| 79 | Transmission fluid temperature (TFT) – high | Transmission mechanical fault, towing |
| 80 | Torque converter clutch (TCC) – slipping | Wiring open circuit/short circuit to ground, supply wire, transmission internal wiring, TCC solenoid, transmission mechanical fault, ECM |
| 81 | Transmission shift solenoid (SS), 2nd-3rd – circuit malfunction | Wiring, SS, ECM |
| 83 | Torque converter clutch (TCC) solenoid, pulse width modulated – circuit malfunction | Wiring, TCC solenoid, ECUM |
| 90 | Torque converter clutch (TCC) – stuck ON | Wiring open circuit/short circuit to ground, transmission internal wiring, TCC solenoid, transmission mechanical fault, ECM |
| 96 | Engine control module (ECM) – ignition supply voltage low | Wiring open circuit, alternator, ECM |
| 98 | Engine control module (ECM) – incorrectly coded | ECM incorrectly coded, ECM |
| 99 | Engine control module (ECM) – incorrectly coded | ECM incorrectly coded, ECM |
