Felkoder
GM Multec
| Code: | Item: |
Fault: |
| 12 | Initiation of diagnosis. | n/a |
| 13 | Oxygen sensor | No change in voltage/open circuit. |
| 14 | Coolant Temperature Sensor (CTS) | Low voltage |
| 15 | Coolant Temperature Sensor (CTS) | High voltage |
| 16 | Knock signal circuit | n/a |
| 18 | Knock control processor | n/a |
| 19 | Crank Angle Sensor (CAS) | Incorrect RPM signal |
| 21 | Throttle Potentiometer Sensor (TPS) | High voltage |
| 22 | Throttle Potentiometer Sensor (TPS) | Low voltage |
| 24 | Vehicle Speed Sensor (VSS) | No speed signal or low voltage |
| 25 | Injector valve | Low voltage |
| 28 | Fuel pump relay contacts | Contact problem |
| 29 | Fuel pump relay | Low voltage |
| 32 | Fuel pump relay | High voltage |
| 33 | Manifold Absolute Pressure (MAP) sensor | High voltage |
| 34 | Manifold Absolute Pressure (MAP) sensor | Low voltage |
| 35 | Idle stepper motor | Poor or no idle speed control |
| 41 | Amplifier control signal, cylinders 2 and 3 (Direct Ignition System (DIS)) | High voltage |
| 42 | Amplifier control signal, cylinders 1 and 4 (Direct Ignition System (DIS)) | High voltage |
| 43 | Primary ignition (distributor systems) | High voltage |
| 44 | Oxygen sensor | Air/Fuel mixture too lean (weak) |
| 45 | Oxygen sensor | Air/Fuel mixture too rich |
| 46 | Amplifier (Direct Ignition System (DIS)) control signal (A+B) | High voltage |
| 47 | Linear exhaust gas re-circulation (EGR) position | n/a |
| 49 | Battery supply to Engine Control Unit (ECU) | High voltage (greater than 17 volts) |
| 51 | Engine Control Unit (ECU) | Defective ECU (disconnect and reconnect (ECU), then recheck for fault codes). Memory failure |
| 52 | Secondary air pump relay | Low voltage |
| 53 | Secondary air pump relay | High voltage |
| 54 | Idle Carbon Monoxide (CO) potentiometer | n/a |
| 55 | Engine Control Unit (ECU) fault | Renew Engine Control Unit (ECU) |
| 56 | Air control soleniod | Low voltage |
| 57 | Air control soleniod | High voltage |
| 61 | Fuel tank vent valve (FTVV) | Low voltage |
| 62 | Fuel tank vent valve (FTVV) | High voltage |
| 63 | Amplifier control signal, cylinders 2 and 3 (Direct Ignition System (DIS)) | Low voltage |
| 64 | Amplifier control signal, cylinders 1 and 4 (Direct Ignition System (DIS)) | Low voltage |
| 65 | Primary ignition (distributor systems) | Low voltage |
| 66 | Throttle position sensor (TPS) | Hose broken |
| 67 | Air Flow Sensor (AFS), hot wire meter (air mass meter) | Signal is outside normal operation parameters (out of range) |
| 68 | Air Flow Sensor (AFS), hot wire meter (air mass meter) | Faulty air mass meter signal, incorrect frequency |
| 69 | Air Temperature Sensor (ATS) (MPi only) | Low voltage |
| 71 | Air Temperature Sensor (ATS) (MPi only) | High voltage |
| 72 | Amplifier (Direct Ignition System (DIS)) control signal (A+B) | Lead interruption, open circuit |
| 75 | Torque control (Automatic Transmission (AT) only) | Low voltage |
| 76 | Torque control (Automatic Transmission (AT) only) | Continuous |
| 81 | Injector valve | High voltage |
| 83 | Immobiliser | No or wrong code |
| 84 | Immobiliser | No signal |
| 85 | Immobiliser | Wrong signal |
| 87 | Air conditioning cut-off relay | Low voltage |
| 88 | Air conditioning cut-off relay | High voltage |
| 92 | Camshaft sensor | Faulty hall effect sensor or circuit |
| 93 | Quad drive module (in ECU) | n/a |