VOLVO
EFI-0044 - Ignition coil. Faulty signal
System
Elektronische Kraftstoffeinspritzung (EFI)
Volvo-Modelle, für die dieser Fehlercode gilt
Dieser Fehlercode hat je nach Modell, Modelljahr oder Motor unterschiedliche Bedeutungen. Wählen Sie die Bedeutung, die für Ihr Fahrzeug gilt.
Gilt für folgende Modelle:
2 ModelleS40 (1996–2004), V40 (1996–2004)
Modelle nach Baujahr und Motor anzeigen (2)
Was bedeutet der Fehlercode?
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.
Mögliche Ursachen
- 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
Was Sie tun können
- 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
Symptome, die Sie bemerken können4
- Emissions warning lamp is lit
- Engine may stall
- Poorer performance
- Uneven idle
Was der Fehler beeinflussen kann1
- The engine runs only on a rich fuel/air mixture
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.