| 92-95 3.1L VIN T/M |
|---|
| 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 | Battery voltage – high or low | Wiring, alternator, ECM |
| 16 (Beretta/Corsica (1992-1993)) | Vehicle speed sensor (VSS) buffer – signal low | Wiring, VSS buffer, ECM |
| 17 (Regal VIN T) | Spark reference circuit | Wiring open circuit/short circuit to ground, ICM, ECM |
| 17 (Regal VIN M) | Camshaft position (CMP) sensor | Wiring open circuit/short circuit to ground/short circuit to positive, ignition feed circuit, CMP sensor, mechanical fault, ECM |
| 17 (Beretta/Corsica) | Camshaft position (CMP) sensor – circuit malfunction | Wiring, CMP sensor, mechanical fault, ECM |
| 18 (Regal) | Camshaft position (CMP) signal/crankshaft position (CKP) signal error | Wiring open circuit/short circuit to ground, CKP sensor, CMP sensor, crankshaft pulley/balancer |
| 19 (Regal) | Crankshaft position (CKP) sensor intermittent 7x signal | Wiring, CKP sensor, PROM, 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 |
| 26 (Regal) | Engine control module quad driver/output driver | Wiring open circuit/short circuit to ground/short circuit to positive, ECM controlled components, ECM (*see below for additional information) |
| 27 (Regal) | Engine control module quad driver/output driver | Wiring open circuit/short circuit to ground/short circuit to positive, ECM controlled components, ECM (*see below for additional information) |
| 28 (Regal VIN T) | Engine control module quad driver/output driver | Wiring open circuit/short circuit to ground/short circuit to positive, ECM controlled components, ECM (*see below for additional information) |
| 28 (Regal VIN M & Beretta/Corsica) | Transmission range (TR) switch | Wiring open circuit/short circuit to ground/short circuit to positive, TR switch, ECM |
| 29 (Regal) | Transmission gear switch signal circuit 4th gear | Wiring open circuit/short circuit to ground, 4th gear switch, ECM |
| 31 (Regal) | Park/neutral position (PNP) switch | Wiring open circuit/short circuit to ground, incorrectly adjusted, PNP switch, ECM |
| 31 (Beretta/Corsica) | 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 (Regal) | Idle speed control (ISC) system – malfunction | Wiring open circuit/short circuit to ground/short circuit to positive, IAC valve, ECM |
| 35 (Beretta/Corsica) | Idle air control (IAC) valve | Wiring, IAC valve, intake system leaking, fuel system, PCV valve, A/C system, mechanical fault, ECM |
| 36 (Regal VIN T) | Shift solenoids (SS) | Wiring open circuit/short circuit to ground, SS |
| 36 (Regal VIN M & Beretta/Corsica) | 24X crankshaft position sensor (CKP) – circuit malfunction | Wiring open circuit/short circuit to ground, 24X CKP sensor, ignition feed circuit, 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 (Regal) | Torque converter clutch (TCC) | Wiring open circuit/short circuit to ground, TCC solenoid, BPP switch, cooling fan fuse, transmission mechanical fault, ECM |
| 39 (Beretta/Corsica) | Brake pedal position (BPP) switch – stuck OFF | Wiring, BPP switch, ECM |
| 41 (Regal VIN T & Beretta/Corsica (1992-1993)) | Engine control module (ECM) – PROM | Insecure PROM, incorrect PROM, ECM |
| 41 (Regal VIN M & Beretta/Corsica (1994-1995)) | Ignition control module (ICM) – electronic spark timing (EST)/ignition control (IC) circuit malfunction | Wiring open circuit, ICM, ECM |
| 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 (Regal) | Immobilizer control module – fuel enable signal | Incorrect ignition key, wiring open circuit/short circuit to ground/short circuit to positive, immobilizer control module, ECM |
| 46 (Beretta/Corsica) | Immobilizer system, code – malfunction | Incorrect key, ECM |
| 51 | Engine control module (ECM) – PROM | Insecure PROM, incorrect PROM, ECM |
| 52 (Beretta/Corsica) | Engine control module (ECM) – malfunction | ECM |
| 53 (Regal VIN M) | Battery Voltage – high/low | Wiring open circuit, alternator, ECM |
| 53 (Beretta/Corsica) | System Voltage – high | Alternator |
| 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 (Regal VIN T & Beretta/Corsica) | Engine control module (ECM) | Ground wiring open circuit, insecure PROM, ECM |
| 56 (Regal) | Engine control module quad driver/output driver | Wiring, ECM controlled components, ECM |
| 57 (Regal) | Boost control problem | Wiring short circuit to ground, hoses blocked/leaking, boost bypass actuator, boost control solenoid, ECM |
| 58 (Regal VIN T) | Immobilizer control module – fuel enable signal | Incorrect ignition key, wiring open circuit/short circuit to ground/short circuit to positive, immobilizer control module, ECM |
| 58 (Regal VIN M & Beretta/Corsica) | 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 (Regal VIN M) | Cruise control vent solenoid | Wiring open circuit/short circuit to ground/short to positive, cruise control servo, ECM |
| 61 (Regal VIN T) | Oxygen sensor (O2S)/heated oxygen sensor (H2OS) | O2S/H2OS |
| 61 (Beretta/Corsica) | Oxygen sensor (O2S) | O2S |
| 62 (Regal VIN M) | Cruise control vacuum solenoid | Wiring open circuit/short circuit to ground/short to positive, cruise control servo, ECM |
| 62 (Regal VIN T & Beretta/Corsica) | Transmission gear switch signal circuit | Wiring open circuit/short circuit to ground, 2nd gear switch, 3rd gear switch, ECM |
| 63 (Regal) | Cruise control servo position sensor – circuit malfunction | Wiring open circuit/short circuit to ground/short to positive, hoses leaking, cruise control servo, ECM |
| 65 (Regal) | Cruise control servo position sensor – circuit malfunction | Wiring open circuit/short circuit to ground/short to positive, cruise control servo, 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 |
| 67 (Regal) | Cruise control switch – circuit malfunction | Wiring open circuit/short circuit to positive, cruise control switch, brake pedal vacuum valve, ECM |
| 68 (Regal) | Cruise control servo – servo position sensor high | Hoses blocked, brake pedal vacuum valve, cruise control servo, cruise control cable binding |
| 68 (Beretta/Corsica) | Torque converter clutch (TCC) – slipping | Wiring, TCC solenoid, transmission mechanical fault, ECM |
| 69 (Regal) | A/C refrigerant pressure switch – engine coolant blower motors | Wiring short circuit to ground, A/C refrigerant pressure switch, ECM |
| 69 (Beretta/Corsica) | 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 (Beretta/Corsica) | Transmission fluid pressure (TFP) control solenoid – circuit malfunction | Wiring, poor connection, TFP solenoid |
| 74 (Beretta/Corsica) | 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 (Beretta/Corsica) | Transmission shift solenoid (SS), 2nd-3rd – circuit malfunction | Wiring, SS, ECM |
| 82 (Regal) | Ignition control module (ICM) – 3X reference circuit malfunction | Wiring open circuit/short circuit to ground, supply wire, CKP signal sensor, ICM, ECM |
| 82 (Beretta/Corsica) | Crankshaft position (CKP) sensor, in cylinder block – 3X signal circuit malfunction | Wiring open circuit/short circuit to ground, CKP sensor, ICM |
| 83 (Beretta/Corsica) | Torque converter clutch (TCC) solenoid, pulse width modulated – circuit malfunction | Wiring, TCC solenoid, ECUM |
| 85 | Engine control module (ECM) – PROM | Insecure PROM, incorrectly coded |
| 86 | Engine control module (ECM) – analogue/digital converter | A/C refrigerant pressure sensro/KS/ECT sensor/fuel pump monitor circuit short circuit to battery voltage |
| 87 | Engine control module (ECM) – PROM error | Insecure PROM, incorrectly coded |
| 87 (Beretta/Corsica) | Engine control module (ECM), EEPROM – malfunction | Poor connections, incorrect programming, ECM |
| 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 (Regal VIN T) | Cruise control – power management mode | Hoses blocked, brake pedal vacuum valve, cruise control servo, cruise control cable binding |
| 99 (Regal VIN M & Beretta/Corsica) | Engine control module (ECM) – incorrectly coded | ECM incorrectly coded, ECM |
