VOLVO
CEM-B1D0111 - Righthand Low Beam Circuit. General Electrical Failures. Circuit short to ground
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 central electronic module (CEM) feeds the right low beam directly from its output. The code is set when the signal cable to the low beam lamp is shorted to ground, and The fault is therefore usually noticed when you switch on the low beam.
Possible causes
- The signal cable to the right low beam lamp is shorted to ground
What you can do
- 1Read and clear the code, then switch on the low beam and see whether the lamp lights
- 2Check that the fuse for the right low beam is intact
- 3Inspect the signal cable to the right low beam lamp for chafing, wear and loose connectors
- 4Use a multimeter to check that the signal cable has no contact with ground (the bodywork)
- 5If you have a diagnostic tool, activate the right low beam with it and check that the lamp lights; otherwise have a workshop check the module output
Symptoms you may notice2
- The right low beam does not work
- Warning symbol and text message in the display
What the fault can affect3
- The function switches off during the driving cycle in which the fault is detected
- After repeated driving cycles with the fault, the function is switched off permanently
- Clearing the fault codes and starting a new driving cycle resets the output
General guidance for car owners. Diagnosis on the car can point to a different cause.