VOLVO
CEM-B1C8412 - Heated rear window relay output circuit. General Electrical Failures. Circuit short to battery
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
7 modellerS60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Hva betyr feilkoden?
The central electronic module (CEM) controls the heated rear window. The code is set when the output signal is too high, which is caused by the supply wire to the rear window heater being shorted to voltage.
Mulige årsaker
- The supply wire to the rear window heater is shorted to voltage
Hva du kan gjøre
- 1Read and clear the code, then switch on the rear window defroster and see whether it heats
- 2Check the rear window heater fuse in the passenger compartment fuse box
- 3Look for chafing and damaged insulation on the supply wire to the rear window heater
- 4Use a multimeter to see whether the supply wire has voltage with the ignition off, which shows a short to voltage
- 5If the wire is intact, have a workshop with diagnostic equipment check the module output
Symptomer du kan merke1
- Electric heating of the rear window does not work
Hva feilen kan påvirke3
- 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
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.