VOLVO
CEM-B10F513 - Left rear position light. General Electrical Failures. Circuit open
System
Central Electronic Module (CEM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (4)
What does this fault code mean?
The CEM feeds the left rear position light directly from an output. The code is stored when the supply cable has a break. The left rear position light then does not work.
Possible causes
- Break in the supply cable
What you can do
- 1Check that the relevant fuses are intact. Their locations are in the owner's manual or on the fuse box cover
- 2Check that the lamp is secure and that the connectors in the lamp housing are clean and free from oxidation
- 3Look for chafing and pinch damage on the supply cable, especially where it may have been bent by movement
- 4Use a multimeter to check that the supply cable is not broken, for example by checking continuity between two contact points
- 5If the fault returns, have a workshop with diagnostic equipment check the wiring and the control module output
Symptoms you may notice1
- Left rear position light does not work
What the fault can affect2
- The function switches off permanently after 100 driving cycles in which the fault was detected
- Clearing the fault codes resets the output
General guidance for car owners. Diagnosis on the car can point to a different cause.