| Code: | Item: |
Fault: |
| 12 | Initiation of diagnosis. | n/a |
| 13 | Oxygen sensor | Open circuit |
| 14 | Coolant temperature sensor | Voltage low |
| 15 | Coolant temperature sensor | Voltage high |
| 16 | Knock sensor signal circuit | No change in voltage |
| 19 | Incorrect Revs per Minute (RPM) signal (crankshaft sensor) | Incorrect signal, check sensor |
| 21 | Throttle position sensor (TPS) | Voltage high |
| 22 | Throttle position sensor (TPS) | Voltage low |
| 23 | Knock control module signal | Out of range |
| 24 | Vehicle speed signal (VSS) | No signal |
| 25 | Injector valve 1 | Voltage high |
| 26 | Injector valve 2 | Voltage high |
| 27 | Injector valve 3 | Voltage high |
| 28 | Injector valve 4 | Voltage high |
| 37 | Check light (fault code lamp) | Voltage low |
| 38 | Oxygen sensor circuit | Voltage high |
| 39 | Oxygen sensor circuit | Voltage low |
| 44 | Oxygen sensor | Lean exhaust (weak mixture) |
| 45 | Oxygen sensor | Rich exhaust (rich mixture) |
| 48 | Battery | Voltage low |
| 49 | Battery | Voltage high |
| 52 | Check light (fault code lamp) | Voltage high |
| 53 | Fuel pump relay | Voltage low |
| 54 | Fuel pump relay | Voltage high |
| 55 | Engine Control Unit (ECU) faulty | Check chassis earth and ECU connector. |
| 56 | Idle air control | Voltage high |
| 57 | Idle air control | Voltage low |
| 61 | Fuel tank vent valve | Voltage low |
| 62 | Fuel tank vent valve | Voltage high |
| 69 | Intake air temperature sensor | Voltage low |
| 71 | Intake air temperature sensor | Voltage high |
| 73 | Mass air flow temperature | Voltage low |
| 74 | Mass air flow temperature | Voltage high |
| 75 | Torque control (automatic) | Voltage low |
| 76 | Torque control (automatic) | Continuous signal, ignition retard long |
| 81 | Injector valve 1 | Voltage low. Injector short circuit to ground. |
| 82 | Injector valve 2 | Voltage low. Injector short circuit to ground. |
| 83 | Injector valve 3 | Voltage low. Injector short circuit to ground. |
| 84 | Injector valve 4 | Voltage low. Injector short circuit to ground. |
| 87 | Air Conditioning (A/C) cut-off relay | Voltage low |
| 88 | Air Conditioning (A/C) cut-off relay | Voltage high |
| 91 | Oxygen sensor heater | Voltage high |
| 92 | Camshaft sensor | Incorrect signal |
| 98 | Oxygen sensor heater | Voltage low, open circuit |