GM Import Trouble Code Info
87-88
Sprint Turbo,89 & later Metro, Tracker, Storm.
|
| 12 |
Diagnostic function working |
| 13 |
Oxygen sensor or circuit |
| 14 |
Coolant temperature sensor or circuit (open) |
| 15 |
Coolant temperature sensor or circuit (shorted) |
| 21 |
Throttle position sensor or circuit (open) |
| 22 |
Throttle position sensor or circuit (shorted) |
| 23 |
Intake air temperature sensor or circuit (open) |
| 24 |
Vehicle speed sensor (VSS) or circuit |
| 25 |
Intake air temperature sensor or circuit (shorted) |
| 31 |
High turbo pressure (87 – 88) |
| 31 |
Barometric pressure sensor or circuit (89 -95) |
| 32 |
Barometric pressure sensor or circuit (89 – 95) |
| 32 |
EGR system (91 – 93) |
| 33 |
Airflow meter (turbo) |
| 33 |
Manifold Absolute Pressure (MAP) sensor (90 – 91) |
| 41 |
Ignition signal problem |
| 42 |
Crank angle sensor (except Storm) |
| 42 |
Camshaft position sensor circuit (94-95) |
| 42 |
Electronic Spark Timing (EST) (Storm) |
| 44 |
ECM idle switch circuit open |
| 44 |
Oxygen sensor or circuit – lean exhaust |
| 45 |
Oxygen sensor or circuit – rich exhaust |
| 46 |
Idle speed control motor |
| 51 |
EGR system (except Storm) |
| 51 |
ECM (Storm) |
| 53 |
ECM ground circuit |
| ON Steady |
ECM faulty |
89 – 92 GEO Metro TBI
|
| 13 |
Oxygen Sensor circuit. |
| 14 |
Coolant Temperature Sensor circuit. High temperature indicated. |
| 15 |
Coolant Temperature Sensor circuit. Low temperature indicated. |
| 21 |
Throttle Switch circuit (Manual Transmission). |
| 21 |
Throttle Position Sensor Signal Voltage High (Automatic Transmission). |
| 22 |
Throttle Position Sensor Signal Voltage Low. |
| 23 |
Intake Air temperature (MAT) Sensor. Low temperature indicated. |
| 24 |
Vehicle Speed Sensor circuit. |
| 25 |
Intake Air temperature (MAT) Sensor. High temperature indicated. |
| 31 |
MAP Sensor circuit – Signal Voltage Low Vacuum. |
| 32 |
MAP Sensor circuit – Signal Voltage High Vacuum. |
| 33 |
MAP Sensor circuit. |
| 41 |
Ignition Signal circuit. |
| 42 |
Crank Angle Sensor. |
| 46 |
Idle Speed Control Motor circuit. |
| 51 |
EGR circuit. |
| 53 |
Ground circuit. |
| 93 – 95 |
| 13 |
Oxygen Sensor circuit. Signal voltage does not change. |
| 14 |
Engine Coolant Temperature Sensor circuit High Voltage Input. Low temperature
indicated. |
| 15 |
Engine Coolant Temperature Sensor circuit Low Voltage Input. High temperature
indicated. |
| 21 |
Throttle Position Sensor circuit High Voltage Input. |
| 22 |
Throttle Position Sensor circuit Low Voltage Input. |
| 23 |
Intake Air temperature Sensor circuit – High Voltage Input. Low temperature
indicated. |
| 24 |
Vehicle Speed Sensor circuit. |
| 25 |
Intake Air temperature Sensor circuit – Low Voltage Input. High temperature
indicated. |
| 31 |
MAP Sensor circuit Low Voltage Input – Low manifold pressure. |
| 32 |
MAP Sensor circuit High Voltage Input – High manifold pressure. |
| 41 |
Ignition Signal circuit. |
| 42 |
Crankshaft Position Sensor circuit – No Signal for 2 seconds. |
| 46 |
Idle Speed Control Motor circuit. |
| 51 |
EGR circuit. |
Sprint(non-turbo)
|
| 12 |
Diagnostic function working |
| 13 |
Oxygen sensor circuit |
| 14 |
Coolant temperature sensor circuit |
| 21 |
Throttle position switches or circuit |
| 23 |
Intake air temperature circuit |
| 32 |
Barometric Pressure circuit |
| 51 |
Possible faulty ECM |
| 52 |
Fuel cut solenoid or circuit |
| 53 |
Secondary air circuit |
| 54 |
Mixture control solenoid or circuit |
| 55 |
Bowl vent solenoid or circuit |
GEO,
Sprint, Nova & Spectrum
|
| 12 |
No distributor reference pulse to ECM |
| 13 |
Oxygen sensor circuit |
| 14 |
Coolant sensor – high or low temp |
| 21 |
Throttle Position Sensor (TPS) voltage high or low |
| 23 |
Intake Air Temperature IAT sensor circuit voltage high or low |
| 24 |
Vehicle Speed Sensor (VSS) or circuit |
| 32 |
EGR (Exhaust gas recirculation) EVRV shorted to ground on start-up |
| 33 |
Manifold Absolute Pressure (MAP) sensor voltage high or low |
| 42 |
Electronic Spark Timing (EST) circuit |
| 44 |
Oxygen sensor or circuit indicates lean exhaust (heated type) |
| 45 |
Oxygen sensor or circuit indicates rich exhaust |
| 51 |
ECM or EEPROM |
43Detonation (knock) sensor or circuit–Turbo type
Spectrum
|
| 12 |
No distributor reference pulses to ECM |
| 13 |
Oxygen sensor circuit |
| 14 |
Coolant sensor circuit shorted. |
| 15 |
Coolant sensor circuit open. |
| 16 |
Coolant sensor circuit open. |
| 21 |
Idle switch out of adjustment (or open circuit) non-Turbo t |
| 21 |
Throttle Position Sensor (TPS) voltage high– Turbo |
| 22 |
Fuel cut off relay or circuit open–non-Turbo |
| 22 |
Throttle Position Sensor (TPS) voltage low–Turbo |
| 23 |
Open or grounded Mixture Control(M/C) solenoid or circuit–
non-Turbo |
| 23 |
Manifold Air Temperature MAT sensor or circuit–Turbo |
| 24 |
Vehicle Speed Sensor (VSS) or circuit–Turbo |
| 25 |
Open or grounded vacuum switching valve or circuit–non-Turbo |
| 25 |
Air Switching Valve (ASV) or circuit–Turbo |
| 31 |
Wastegate control–Turbo |
| 33 |
Manifold Absolute Pressure (MAP) sensor voltage high–Turbo |
| 34 |
Manifold Absolute Pressure (MAP) sensor voltage low–Turbo |
| 42 |
Electronic Spark Timing (EST) circuit EST circuit is grounded or open.
Turbo |
| 42 |
Fuel cut off relay or circuit non-Turbo type |
| 44 |
Oxygen sensor or circuit indicates lean exhaust non-Turbo |
| 45 |
Oxygen sensor or circuit indicates rich exhaust |
| 51 |
ECM or PROM |
| 53 |
Shorted switching unit or faulty ECM non-Turbo |
| 54 |
Mixture Control (M/C) solenoid or circuit, or faulty ECM non-Turbo |
| 55 |
Faulty ECM non-Turbo |
