VOLVO
CEM-DD1C - Communication with SCM control module Faulty signal
System
Central Electronic Module (CEM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
What does this fault code mean?
The siren's control module identifies itself with data that does not match this car, which is not what the central module expects. The fault gives no noticeable symptoms for the driver. If the siren works as it should, the control module does not need replacing.
Possible causes
- The siren control module does not match what the central module expects for this car
What you can do
- 1If the siren works as it should, do not replace the siren control module, since that is not needed to clear the fault
- 2Have a workshop check that the correct siren unit is fitted in this car
- 3Clear the fault code after the workshop check, then road test to see whether it returns
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.