VOLVO
ECM-1656 - Control module communication problems. Faulty signal
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 (6)
- Volvo C30 (2007–2013)2007–2010Nur Motor: D4204T
- Volvo C70 (2006–2013)2008–2010Nur Motor: D4204T
- Volvo S40 (2004–2013)2004–2006Nur Motor: D4204T, D4204T2
- Volvo S40 (2004–2013)2007–2010Nur Motor: D4204T
- Volvo V50 (2004–2013)2004–2006Nur Motor: D4204T, D4204T2
- Volvo V50 (2004–2013)2007–2010Nur Motor: D4204T
Was bedeutet der Fehlercode?
The ECM detects a serious disturbance on the CAN bus, which is the shared data link between the car's modules. Communication with it is then blocked, and the fault code is set.
Mögliche Ursachen
- Contact resistance or oxidation in the terminals
- Open circuit in one of the CAN wires
- Short circuit between the CAN wires
- Fault inside the ECM itself
- Fault inside another module on the same CAN segment
Was Sie tun können
- 1First read the fault codes stored in CEM and the other modules. Do not clear this code until those are fixed, since it may be a knock-on fault
- 2Switch off the ignition and check the connectors on the CAN network for contact resistance and oxidation
- 3With a multimeter, check that the CAN wires have no break and are not shorted to each other
- 4If the fault remains after this, have a workshop check the control modules on the CAN network
Symptome, die Sie bemerken können1
- Warning symbol and a text message in the display
Was der Fehler beeinflussen kann1
- The engine control module may stay shut off until the power supply is interrupted, then it tries to communicate again
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.