VOLVO
CEM-B1C8214 - Headlamp washer relay A. General Electrical Failures. Circuit short to ground or open
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 central electronic module (CEM) supplies the headlight washer motor. The code is set when the output signal is out of range: it is too low with an open circuit in the supply wire or a short to ground, but it can also be too high.
Possible causes
- Open circuit on the supply wire to the washer motor
- The supply wire is shorted to ground
What you can do
- 1Clear the code and check whether it comes back after a new driving cycle
- 2Check the headlight washer fuse in the engine bay fuse box
- 3Check that the connectors in the supply circuit to the washer motor are fully engaged and not corroded
- 4Use a multimeter to check that the supply wire is intact and has no contact with ground (the bodywork)
- 5If you have a diagnostic tool, check whether the washing shows as active in the live data when you start it
Symptoms you may notice3
- The headlight washer motor does not work
- The washer motor cannot be switched off
- Headlight cleaning does not work
What the fault can affect2
- After repeated driving cycles with the fault, the function is switched off permanently
- Clearing the fault codes resets the output
General guidance for car owners. Diagnosis on the car can point to a different cause.