VOLVO
CEM-B1A8441 - Car Configuration Data. System Internal Failures. General checksum failure
System
Central Electronic Module (CEM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The CEM has detected a fault in the car configuration data, where the checksum does not match. The cause is faulty software in the CEM, so the fault lies in the control module and not in the wiring.
Possible causes
- Faulty software in the CEM
What you can do
- 1Check that the battery has sufficient voltage and that the fuses are intact
- 2Clear the fault code, start the car and check whether the fault code returns
- 3Have a workshop reload the CEM with the latest software, then check the fault code
- 4If the fault remains after the reload, have a workshop replace the CEM
Symptoms you may notice2
- The engine does not start
- No clicking sound when starting is attempted
General guidance for car owners. Diagnosis on the car can point to a different cause.