VOLVO
CEM-U049900 - Invalid data received from Telematic Control Module. General Failure Information. No sub type information
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 fault code means that CEM receives an incorrect value from the phone module (PHM), which handles the telematics in the car. The fault can stop Volvo On Call from working. The cause may be faulty software in the PHM or in the CEM, so it is a software issue rather than a wiring fault.
Possible causes
- Faulty software in the phone module (PHM)
- Faulty software in the central electronic module (CEM)
What you can do
- 1Have a workshop download new software to the phone module (PHM) with diagnostic equipment. This is the first step
- 2If the fault remains, the workshop downloads new software to the CEM
- 3Do not replace the CEM unnecessarily, since the fault can often be fixed with software
- 4After the update, check whether the Volvo On Call functions work
Symptoms you may notice2
- Volvo On Call does not work
- Other Volvo On Call problems
General guidance for car owners. Diagnosis on the car can point to a different cause.