VOLVO
ECM-C400 - Configuration fault. Faulty configuration
System
Engine Control Module (ECM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
3 modelsC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (13)
- Volvo C30 (2007–2013)2007–2009Engine B4184S11, B4184S8, B4204S3 only
- Volvo C30 (2007–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo C30 (2007–2013)2011–2013Engine B4204S3, B4204S4 only
- Volvo S40 (2004–2013)2005Engine B4184S11 only
- Volvo S40 (2004–2013)2006Engine B4184S11, B4184S8 only
- Volvo S40 (2004–2013)2007–2009Engine B4184S11, B4184S8, B4204S3 only
- Volvo S40 (2004–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo S40 (2004–2013)2011–2012Engine B4204S3, B4204S4 only
- Volvo V50 (2004–2013)2005Engine B4184S11 only
- Volvo V50 (2004–2013)2006Engine B4184S11, B4184S8 only
- Volvo V50 (2004–2013)2007–2009Engine B4184S11, B4184S8, B4204S3 only
- Volvo V50 (2004–2013)2010Engine B4184S11, B4184S8, B4204S3, B4204S4 only
- Volvo V50 (2004–2013)2011–2012Engine B4204S3, B4204S4 only
What does this fault code mean?
The engine control module holds a unique configuration ID that must agree with the other modules on the car's CAN network. If no acceptable ID arrives in time, the fault code is set. The driver normally notices no symptoms.
Possible causes
- Wrong CAN configuration ID, for example when the module is not made for this exact car, such as a used unit with other software or hardware
- Open circuit in the CAN wiring between the engine control module and the CEM
What you can do
- 1If the module has been replaced, for example with a used one, ask a workshop to check the configuration, since it may carry the wrong ID for this car
- 2Read out the fault codes in the CEM and the engine control module, and fix the CAN codes first
- 3Check that the fuses are intact and that the battery has a good charge
- 4Look for breaks and chafing on the CAN wiring between the engine control module and the CEM
- 5Erase the fault code once the faults are fixed, then road test the car to see whether it comes back
- 6If the fault remains, have a workshop check the configuration and software with diagnostic equipment
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.