VOLVO
ECM-A20C - Engine control module (ECM). Signal too high
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
4 ModelleC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Modelle nach Baujahr und Motor anzeigen (9)
- Volvo C30 (2007–2013)2007Nur Motor: B5254T3
- Volvo C30 (2007–2013)2008–2013Nur Motor: B5254T7
- Volvo C70 (2006–2013)2006–2007Nur Motor: B5254T3
- Volvo C70 (2006–2013)2008–2013Nur Motor: B5254T7
- Volvo S40 (2004–2013)2005–2007Nur Motor: B5254T3
- Volvo S40 (2004–2013)2008Nur Motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Nur Motor: B5254T7
- Volvo V50 (2004–2013)2005–2007Nur Motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Nur Motor: B5254T7
Was bedeutet der Fehlercode?
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.
Mögliche Ursachen
- 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)
Was Sie tun können
- 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
Symptome, die Sie bemerken können1
- Malfunction indicator lamp lights
Was der Fehler beeinflussen kann1
- The engine control module calculates a timer value instead
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.