VOLVO
CEM-8A01 - Invalid switch position for light switch. Signal faulty. Intermittent fault
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:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
What does this fault code mean?
CEM has found a fault inside the light switch, and the fault code is set. The fault is intermittent, so it may have occurred earlier without being active now. The light switch then does not work as it should.
Possible causes
- Faulty light switch
What you can do
- 1Switch the ignition off and on again and check whether the light switch works normally
- 2Clear the fault code and test the lights in each switch position to see whether the fault returns
- 3If the fault returns, a workshop should replace the light switch
Symptoms you may notice1
- Light switch does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.