| 93-95 5.7L VIN P |
|---|
| Flash Code | Fault Location | Probable Cause |
| 11 | Malfunction indicator lamp (MIL) – circuit malfunction | Wiring open circuit/short circuit to ground, MIL, ECM |
| 12 | Start of diagnosis | No engine speed (RPM) signal received |
| 13 | Oxygen sensor (O2S)/heated oxygen sensor (HO2S), bank 1 | 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 | Distributor ignition system, low resolution signal – circuit malfunction | Wiring, distributor, ECM |
| 18 | Injector(s) – circuit malfunction | Wiring, injector(s) |
| 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, VSS, ECM |
| 25 | Intake air temperature (IAT) sensor – high temperature | Wiring short circuit to ground, IAT sensor, ECM |
| 26 | Engine control module (ECM), quad driver/output driver – circuit malfunction | Wiring, ECM controlled components, ECM |
| 27 | Engine control module (ECM), quad driver/output driver – circuit malfunction | Wiring, ECM controlled components, ECM |
| 28 (1993 Firebird) | Engine control module (ECM), quad driver/output driver – circuit malfunction | Wiring, ECM controlled components, ECM |
| 28 (1994 Firebird) | Transmission gear pressure switch, signal – circuit malfunction | Wiring open circuit/short circuit to ground, reverse/D1/D2/D3/D4 gear pressure switch(es), ECM |
| 29 | Secondary air injection (AIR) pump relay – circuit malfunction | Wiring, AIR pump relay, ECM |
| 32 | Exhaust gas recirculation (EGR) solenoid | Wiring open circuit/short circuit to ground, EGR valve, ECM |
| 33 | Manifold absolute pressure (MAP) sensor – voltage high/low | Wiring, hose blocked/leaking, MAP sensor, ECM |
| 34 | Manifold absolute pressure (MAP) sensor – voltage low | Wiring open circuit/short circuit to ground, MAP sensor, ECM |
| 36 | Distributor ignition system, high resolution signal – circuit malfunction | Wiring, distributor, ECM |
| 37 | Brake pedal position (BPP) switch for torque converter clutch (TCC) – high voltage | Wiring short circuit to positive, incorrectly adjusted, BPP switch, BPP switch, ECM |
| 38 | Brake pedal position (BPP) switch/ torque converter clutch (TCC) – low voltage | Wiring open circuit, supply wire, BPP switch, ECM |
| 41 | Ignition control, reference signal – circuit malfunction | Wiring open circuit, poor connections, ICM, ECM |
| 42 | Ignition control, reference signal – circuit malfunction | Wiring short to ground, ICM, ECM |
| 43 | Knock sensor (KS) – circuit malfunction | Wiring, KS, ECM |
| 44 | Oxygen sensor (O2S)/heated oxygen sensor (HO2S), bank 1 – mixture lean | Wiring open circuit/short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, O2S, ECM |
| 45 | Oxygen sensor (O2S)/heated oxygen sensor (HO2S), bank 1 – mixture rich | Wiring open circuit, injector(s) leaking, fuel pressure high, EVAP purge valve, TP sensor, O2S, EGR system, ECM |
| 46 | Immobilizer system, code – malfunction | Incorrect key, ECM |
| 47 | Knock control module, removable part in engine control module (ECM) – circuit malfunction | Wiring, poor connection, missing knock control module, ECM |
| 48 | Mass airflow (MAF) sensor – no signal | Wiring, poor connections, MAF sensor, ECM |
| 50 | System voltage – low | Alternator |
| 51 | Engine control module (ECM) – PROM | Poor connections, incorrect programming, ECM |
| 53 | System Voltage – high | Alternator |
| 55 | Engine control module (ECM), fuel lean monitor | Fuel filter/lines blocked, fuel contamination |
| 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 | A/C system – performance | Refrigerant low, wiring, A/C refrigerant pressure sensor, A/C evaporator temperature sensor, ECM |
| 63 | Oxygen sensor (O2S)/heated oxygen sensor (HO2S), bank 2 | Wiring open circuit, O2S/HO2S, ECM |
| 64 | Oxygen sensor (O2S)/heated oxygen sensor (HO2S), bank 2 – mixture lean | Wiring open circuit/short circuit to ground, injector(s) blocked, fuel contamination, fuel pressure low, exhaust system leaking, O2S, ECM |
| 65 | Oxygen sensor (O2S)/heated oxygen sensor (HO2S), bank 2 – mixture rich | Wiring open circuit, injector(s) leaking, fuel contamination, fuel pressure high, TP sensor, EGR system, EVAP purge valve, O2S, ECM |
| 66 | A/C refrigerant pressure sensor – voltage low | Wiring open circuit/short circuit to ground, A/C refrigerant pressure sensor, ECM |
| 67 | A/C refrigerant pressure sensor – circuit malfunction | Wiring open circuit, A/C refrigerant pressure sensor, ECM |
| 68 | A/C compressor clutch relay – circuit malfunction | Wiring short circuit, A/C compressor clutch relay, ECM |
| 69 | A/C compressor clutch relay – circuit malfunction | Wiring open circuit, A/C compressor clutch relay, ECM |
| 70 | A/C compressor clutch relay, control signal – circuit malfunction | Wiring, A/C compressor clutch relay, ECM |
| 71 | A/C evaporator temperature sensor – voltage high | Wiring, poor connections, A/C evaporator temperature sensor |
| 72 | Vehicle Speed Sensor (VSS) | Wiring, VSS, ECM |
| 73 | Transmission fluid pressure (TFP) control solenoid – circuit malfunction | Wiring, poor connections, TFP solenoid |
| 74 | Traction control system (TCS), active signal – malfunction | Wiring short to ground, ABS/TCS, ECM |
| 75 | System voltage, engine control module (ECM) – low | Wiring, battery, alternator, ECM |
| 77 | Engine coolant blower motor relay – circuit malfunction | Wiring, engine coolant blower blower motor relay, ECM |
| 79 | Transmission fluid temperature (TFT) – high | Transmission mechanical fault, towing weight limit exceeded |
| 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 |
| 82 | Transmission shift solenoid (SS), 1st-2nd – circuit malfunction | Wiring, SS, ECM |
| 83 | Reverse gear inhibit solenoid – circuit malfunction | Wiring, reverse gear inhibit solenoid, ECM |
| 84 (Automatic) | Transmission 3rd-2nd control solenoid – circuit malfunction | Wiring, control solenoid, ECM |
| 84 (Manual) | Skip shift solenoid – circuit malfunction | Wiring, skip shift solenoid, ECM |
| 85 | Torque converter clutch (TCC) solenoid – stuck ON | Wiring open circuit/short circuit to ground, transmission internal wiring, TCC solenoid, transmission mechanical fault, ECM |
| 90 | Torque converter clutch (TCC) – circuit malfunction | Wiring, TCC solenoid, ECM |
| 91 | Skip shift warning lamp – circuit malfunction | Wiring, skip shift warning lamp, ECM |
| 97 | Engine control module (ECM), vehicle speed sensor (VSS) output signal – circuit malfunction | Wiring, poor connections, ECM |
| 99 | Engine control module (ECM), tachometer output signal – circuit malfunction | Wiring, poor connections, ECM |
what abt cod number 2?