VOLVO
CEM-6F10 - Sun roof. Signal too high
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:
4 modelsC30 (2007–2013), C30 Electric (2011–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (4)
What does this fault code mean?
CEM communicates with the sun roof control unit (SRM). If CEM notes that the speed signal circuit to the sun roof is short-circuited to battery voltage, the fault code is set and the automatic closing of the sun roof does not work.
Possible causes
- Signal wire short-circuited to battery voltage
What you can do
- 1Clear the fault code and then check that the sun roof can be closed automatically
- 2Check the sun roof control unit connector for loose connections and corrosion
- 3Use a multimeter to check that the signal wire to the sun roof has no contact with battery voltage
- 4Remedy what is found and check that the sun roof can be closed automatically again
Symptoms you may notice1
- Automatic sun roof closure does not function
General guidance for car owners. Diagnosis on the car can point to a different cause.