VOLVO
CEM-B1C9615 - Alarm LED Circuit. General Electrical Failures. Circuit short to battery or open
System
Central Electronic Module (CEM)
Volvo models this fault code applies to
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) checks the alarm status LED on the instrument panel. The code is set when the signal wire has an open circuit or is shorted to voltage.
Possible causes
- Open circuit in the supply wire to the alarm LED
- The supply wire to the alarm LED is shorted to voltage
What you can do
- 1Read and clear the code and see whether it comes back after a new driving cycle
- 2Look for breaks and loose connectors on the supply wire to the alarm LED
- 3Use a multimeter to see whether the supply wire has voltage with the ignition off
- 4Use a multimeter to check that the wire is continuous between its ends
- 5If the wire is intact, have a workshop with diagnostic equipment check the LED and the control module
Symptoms you may notice1
- The alarm LED and status panel show a fault
What the fault can affect2
- After repeated driving cycles with the fault, the function is switched off permanently
- Clearing the fault codes resets the output
General guidance for car owners. Diagnosis on the car can point to a different cause.