VOLVO
ECM-3542 - Misfire, emission. Faulty signal. Permanent fault
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
5 modellerC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S70 (1997–2000), V70 (1997–2000), V70 XC (1998–2000)
Vis modeller per årsmodell og motor (5)
Hva betyr feilkoden?
The engine control module has detected that cylinder 4 is misfiring, and the misfire affects emissions. The fault is permanent, so it is present right now. The cause can be related to fuel or ignition, but air leaks and uneven compression can also produce the same fault.
Mulige årsaker
- Blocked or leaking injector
- Uneven compression in the engine
- Air leakage into the engine
- Faulty fuel pressure
- Low fuel level, or contaminated or incorrect fuel
- Repeated cold starts without the engine reaching normal temperature between them
Hva du kan gjøre
- 1Check the engine oil level
- 2Read and note that the code refers to cylinder 4, clear it and road test
- 3Check the spark plug in cylinder 4 for damage to the insulation and for moisture in the plug well
- 4If you have a diagnostic tool: read the misfire counter for cylinder 4 at idle and see whether it rises
- 5Look for air leaks at the intake hoses and joints, especially where a hose may have come loose
- 6If the fault remains, have a workshop measure fuel pressure and compression with diagnostic equipment
Symptomer du kan merke4
- The engine misfires
- The engine is hard to start
- Performance is reduced
- Idle is uneven
Hva feilen kan påvirke3
- Catalytic converter diagnosis is switched off
- Leak diagnosis is switched off
- Rear oxygen sensor control is switched off
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