VOLVO
ECM-740B - Communication, central electronic module (CEM). Signal missing
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 ECM has logged a problem on the CAN link between the CEM and the ECM. The fault may be caused by a broken or shorted CAN wire, or by an internal fault in the engine control module or in another module on the same part of the network. The fault applies to the C30, C70 (06-), S40 (04-) and V50.
Mögliche Ursachen
- Open circuit in one of the CAN wires
- Short circuit between the CAN wires
- Internal fault in the engine control module
- Internal fault in another control module on the same part of the CAN network
Was Sie tun können
- 1First read the codes in the central electronic module and in other affected control modules, and remedy them
- 2Visually inspect the CAN wires to the engine control module for chafing, breaks and loose connectors
- 3Using a multimeter, check that the CAN wires are not shorted to each other or to ground
- 4Clear this code only after the other codes have been remedied and cleared, then road test the car
- 5If the fault remains, have a workshop with diagnostic equipment check the CAN network and the engine control module
Symptome, die Sie bemerken können1
- No noticeable symptoms for the driver
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.