VOLVO
ECM-A20C - Engine control module (ECM). Signal too high
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
4 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (9)
- Volvo C30 (2007–2013)2007Kun motor: B5254T3
- Volvo C30 (2007–2013)2008–2013Kun motor: B5254T7
- Volvo C70 (2006–2013)2006–2007Kun motor: B5254T3
- Volvo C70 (2006–2013)2008–2013Kun motor: B5254T7
- Volvo S40 (2004–2013)2005–2007Kun motor: B5254T3
- Volvo S40 (2004–2013)2008Kun motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Kun motor: B5254T7
- Volvo V50 (2004–2013)2005–2007Kun motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Kun motor: B5254T7
Hva betyr feilkoden?
The central electronic module (CEM) sends a timer value over the CAN network giving the time elapsed since the last engine shutdown. The engine control module relies on it when starting a warm engine. Although the name says signal too high, the code is set when the engine control module finds the signal wrong or missing, and the lamp comes on.
Mulige årsaker
- Faulty timer signal from the central electronic module (CEM)
- Open or short circuit in the CAN cable between the engine control module and the CEM
- Damaged central electronic module (CEM)
Hva du kan gjøre
- 1Start by reading and remedying the fault codes in the central electronic module (CEM)
- 2Check the CAN cable between the engine control module and the CEM for open circuits, short circuits and chafing
- 3The fault code must not be cleared until the codes in the CEM and other affected modules have been remedied and cleared
- 4Clear the fault code once the faults are remedied and road test the car to see whether it returns
Symptomer du kan merke1
- Malfunction indicator lamp lights
Hva feilen kan påvirke1
- The engine control module calculates a timer value instead
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