VOLVO
ECM-2339 - Cylinder #4 Above Knock Threshold
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
3 modellerC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (9)
- Volvo C30 (2007–2013)2008–2009Kun motor: B4184S11, B4184S8, B4204S3
- Volvo C30 (2007–2013)2010Kun motor: B4184S11, B4184S8, B4204S3, B4204S4
- Volvo C30 (2007–2013)2011–2013Kun motor: B4204S3, B4204S4
- Volvo S40 (2004–2013)2008–2009Kun motor: B4184S11, B4184S8, B4204S3
- Volvo S40 (2004–2013)2010Kun motor: B4184S11, B4184S8, B4204S3, B4204S4
- Volvo S40 (2004–2013)2011–2012Kun motor: B4204S3, B4204S4
- Volvo V50 (2004–2013)2008–2009Kun motor: B4184S11, B4184S8, B4204S3
- Volvo V50 (2004–2013)2010Kun motor: B4184S11, B4184S8, B4204S3, B4204S4
- Volvo V50 (2004–2013)2011–2012Kun motor: B4204S3, B4204S4
Hva betyr feilkoden?
Cylinder 4 has produced too many combustion knock events, and the engine control module (ECM) responds by adjusting the ignition. The code is set only once the knock count for cylinder 4 exceeds the module's level. The knock sensor on the engine block supplies the data the module uses.
Mulige årsaker
- Engine running on a lean fuel/air mixture
- Poor fuel quality, for example summer fuel in winter
- Engine running too hot
- Intake air temperature too high
- Knock sensor fitted loosely
- Damaged knock sensor
Hva du kan gjøre
- 1Read and clear the code, then road test to see whether it returns
- 2Fill up with petrol of the right grade for the season, and avoid fuel that causes knock
- 3Make sure the knock sensor connector is secure and has not taken in moisture
- 4If you have a diagnostic tool: compare the ignition timing adjustment for cylinder 4 with the other cylinders in live data during driving
- 5If the fault remains, have a workshop decide whether the knock sensor needs replacing
Symptomer du kan merke1
- Poor performance
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.