VOLVO
ECM-0304 - Misfire cylinder 4.Signal too high
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:
3 modellerC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (14)
- Volvo C30 (2007–2013)2007–2009Kun motor: B4164S3, B4184S11, B4184S8, B4204S3
- Volvo C30 (2007–2013)2010Kun motor: B4164S3, B4184S11, B4184S8, B4204S3, B4204S4
- Volvo C30 (2007–2013)2011–2012Kun motor: B4164S3, B4204S3, B4204S4
- Volvo C30 (2007–2013)2013Kun motor: B4204S3, B4204S4
- Volvo S40 (2004–2013)2005Kun motor: B4164S3, B4184S11
- Volvo S40 (2004–2013)2006Kun motor: B4164S3, B4184S11, B4184S8
- Volvo S40 (2004–2013)2007–2009Kun motor: B4164S3, B4184S11, B4184S8, B4204S3
- Volvo S40 (2004–2013)2010Kun motor: B4164S3, B4184S11, B4184S8, B4204S3, B4204S4
- Volvo S40 (2004–2013)2011–2012Kun motor: B4164S3, B4204S3, B4204S4
- Volvo V50 (2004–2013)2005Kun motor: B4164S3, B4184S11
- Volvo V50 (2004–2013)2006Kun motor: B4164S3, B4184S11, B4184S8
- Volvo V50 (2004–2013)2007–2009Kun motor: B4164S3, B4184S11, B4184S8, B4204S3
- Volvo V50 (2004–2013)2010Kun motor: B4164S3, B4184S11, B4184S8, B4204S3, B4204S4
- Volvo V50 (2004–2013)2011–2012Kun motor: B4164S3, B4204S3, B4204S4
Hva betyr feilkoden?
The engine control module (ECM) counts misfires in cylinder 4 and stores the fault when the count exceeds a set limit while driving. The cylinder is not burning its fuel properly, which shows up as a rough idle and weaker throttle response. The fault should not be ignored, since unburnt fuel can damage the catalytic converter.
Mulige årsaker
- Blocked or leaking injector for cylinder 4
- Fault in the EGR system
- Uneven compression in cylinder 4
- Air leakage in the intake system
- Faulty fuel pressure or damaged fuel pipes
- Faulty ignition system or contaminated fuel
Hva du kan gjøre
- 1Read out the fault code, erase it and road-test to see whether it returns
- 2Make sure the fuel tank has enough fuel and that the engine oil level is correct
- 3High-voltage ignition parts: keep clear while the engine runs. Check the cylinder 4 spark plug wells for moisture and damaged plug insulation
- 4Look for air leaks in the rubber hoses and intake pipe, especially at the connections. A stuck EGR valve can also cause the fault
- 5If you have a diagnostic tool, check in live data how the misfire counter for cylinder 4 behaves at idle compared with the other cylinders
- 6If the fault remains, have a workshop with diagnostic equipment measure the fuel pressure and compression and check the injector for cylinder 4
Symptomer du kan merke4
- The malfunction indicator lamp (MIL) is lit
- The engine misfires and does not fire on all cylinders
- The engine is difficult to start
- Poor performance and uneven idle
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