VOLVO
EFI-0044 - Ignition coil. Faulty signal
System
Elektronisk drivstoffinnsprøytning (EFI)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
2 modellerS40 (1996–2004), V40 (1996–2004)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
The code is stored when, with the engine on a lean mix, the crankshaft sensor reads an engine speed that is abnormal because of misfires. The fault can therefore lie in the ignition coil or the circuit to it. Spark plugs can give the same symptoms, so they should be checked together with the coil.
Mulige årsaker
- The ignition coil is defective
- The spark plugs are defective
- Short to earth or to a live supply in the ignition wiring
- Open circuit in the ignition system circuit
- Contact resistance at the connections
Hva du kan gjøre
- 1Check the plugs on each coil and on the control module for play and oxidation
- 2Find the misfiring cylinder by unplugging the ignition coils one at a time with the engine running
- 3Replace the spark plug in the misfiring cylinder with a new one, or swap the coil there, and road test
- 4Use a multimeter to check whether the wiring to the affected ignition coil has a break or is shorted to earth
- 5Avoid touching ignition coils and plug leads while the engine runs, as the high-voltage circuit is dangerous
- 6If the fault does not clear, have a workshop with diagnostic equipment check the whole ignition system
Symptomer du kan merke4
- Emissions warning lamp is lit
- Engine may stall
- Poorer performance
- Uneven idle
Hva feilen kan påvirke1
- The engine runs only on a rich fuel/air mixture
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.