| | | |
| 02 | Live feed to ECU has been interrupted | Normal if ECU has been disconnected to clear old fault codes. Code 02 will clear if ignition turned off for 30 secs then on again. |
| 03 | Stored data corrupted since last trip
| No useful information available. Test drive and try again.
|
| 12 | Airflow meter out of range
| Possible air leak or wiring fault.
|
| 14 | Coolant thermistor out of range
| Faulty sensor or wiring.
|
| 15 | Fuel thermistor out of range
| Faulty sensor or wiring.
|
| 17 | Throttle sensor out of range
| Sensor needs adjustment or is faulty or has wiring fault. This can cause low speed misfires
|
| 18 | Throttle sensor output too high when air flow low
| Large air leak between throttle butterfly and A/F meter or faulty throttle sensor or A/F meter.
|
| 19 | Throttle sensor output too low when airflow high
| Faulty A/F meter or throttle sensor.
|
| 21 | Tune resistor out of range
| Check tune resistor resistance.
|
| 23 | Low fuel pressure | Blocked fuel filter or faulty pump or pressure regulator. Valid for cat cars only.
|
| 25 | Misfire at full load
| Faulty plugs, leads, electronic ignition unit, distributor or coil, low fuel pressure or valve or head gasket leak. See 40 and 50. Valid for cat cars only.
|
| 28 | Air leak
| Leak in A/F meter hoses, injector seals, inlet manifold gasket, plenum gasket, servo or crankcase vent hoses or Lambda sensors. Valid for cat cars only.
|
29
| Checksum error
| The ECU needs checking/replacing |
| 34 | Fuelling fault in nearside injector bank
| Injector or Lambda sensor wiring fault, faulty injectors, air leak at injector seals or inlet mainfold, blocked injectors. Valid for cat cars only.
|
| 36 | Fuelling fault in offside injector bank
| As above but for cylinders 2-4-6-8 only. Valid for cat cars only.
|
| 40 | Misfire on nearside bank
| As 25 but for cyclinders 1-3-5-7 only. Valid for cat cars only.
|
| 44 | Nearside Lambda sensor out of range
| Faulty or lead-poisoned sensor or sensor wiring fault. Valid for cat cars only.
|
| 45 | Offside Lambda sensor out of range
| As above. Valid for cat cars only.
|
| 48 | Stepper motor fully open above 500 rpm or fully closed above 750 rpm
| Sticking stepper valve, incorrect base idle speed adjustment, air leak on non-cat cars, incorrect stepper motor adjustment, incorrect throttle butterfly adjustment, rough running because of fuel or ignition or mechanical faults.
|
| 50 | Misfire on offside bank
| A 25 but for cylinders 2-4-6-8 only. Valid for cat cars only.
|
| 59 | ECU unable to distinguish between faults 23 and 28
| Fault occured for insufficient time for ECU to diagnose.
|
| 68 | Road speed sensor output too low at medium rpm and high air flow
| Possible sensor or wiring fault (will also cause wrong speedo readings on electrical speedo cars). Valid for cat cars only.
|
| 88 | Power-up check
| Not a fault. Sometimes displayed on first connecting test module.
|
| | | |
