VOLVO
ECM-1656 - Control module communication problems. Faulty signal
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 (6)
- Volvo C30 (2007–2013)2007–2010Kun motor: D4204T
- Volvo C70 (2006–2013)2008–2010Kun motor: D4204T
- Volvo S40 (2004–2013)2004–2006Kun motor: D4204T, D4204T2
- Volvo S40 (2004–2013)2007–2010Kun motor: D4204T
- Volvo V50 (2004–2013)2004–2006Kun motor: D4204T, D4204T2
- Volvo V50 (2004–2013)2007–2010Kun motor: D4204T
Hva betyr feilkoden?
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.
Mulige årsaker
- 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
Hva du kan gjøre
- 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
Symptomer du kan merke1
- Warning symbol and a text message in the display
Hva feilen kan påvirke1
- The engine control module may stay shut off until the power supply is interrupted, then it tries to communicate again
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