VOLVO
CEM-B1D3896 - Front wiper motor. Component Failures. Component internal failure
System
Central Electronic Module (CEM)
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:
7 modelsS60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The control module (CEM) exchanges messages with the windscreen wiper module (WMM), which controls the wipers. The code is set when the control module detects that its internal components are not working. One possible cause is battery acid leaking from the alarm siren and disturbing the LIN network, or the WMM being damaged.
Possible causes
- Battery acid leaks from the alarm siren control module (SCM) and disturbs communication on the LIN network
- Damaged windscreen wiper control module (WMM)
What you can do
- 1Read and clear the code, then test the wipers
- 2Look for traces of battery acid or corrosion in the engine bay and at the alarm siren; battery acid is corrosive, so wear protective gloves and have a workshop deal with it
- 3Check the windscreen wiper fuse
- 4Have a workshop with diagnostic equipment check the LIN network and the WMM if the fault remains
Symptoms you may notice1
- The windscreen wiper does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.