VOLVO
CCM-B103F87 - Rear Seat Heater Control. Bus Signal / Message Failures. Missing message
System
Climate Control Module (CCM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The climate control module (CCM) receives no message from the rear seat heating switch, so it cannot control the heat there. The fault is caused by interference in the communication between the two units.
Possible causes
- Interference in the communication between the switch and the climate control module
- Loose or poor connection in the wiring to the switch
What you can do
- 1Check that the fuses for the rear seat heating are intact
- 2Test the rear seat heating with the switch and see whether it works
- 3Read and note the code, clear it and road test the car to see whether it returns
- 4Check that the switch connector is fully engaged and free from corrosion
- 5If you have a diagnostic tool, read the live data for the switch and check that it responds when you switch the heat on
Symptoms you may notice2
- Rear seat heating does not work
- Rear seat heat is either missing or too hot
General guidance for car owners. Diagnosis on the car can point to a different cause.