What does fault code CCM-B103501 mean?

Diagnostic fault code details for CCM-B103501 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo V40 (2013–)). Repair service at OBD Tuning.

VOLVO

CCM-B103501 - Left Rear Seat Heater Element. General Failure Information. General electrical failure

System

Climate Control Module (CCM)

Volvo models this fault code applies to

Applies to the following models:

9 models

S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)

Show models by year and engine (9)

What does this fault code mean?

The climate control module (CCM) receives status and current temperature from the seat heating module for the left rear seat and has found that the heating element in the seat is not working. The fault lies in the wire between the seat heating module and the heating element, which may be broken or short-circuited to ground or voltage. The heat in the rear seat then fails to come on.

Possible causes

Open circuit in the wire between the seat heating module (SHM) and the heating element
The wire between the seat heating module (SHM) and the heating element is shorted to ground
The wire between the seat heating module (SHM) and the heating element is shorted to voltage
Open circuit in the wire between the left rear seat heating module (SHMRL) and the heating element
The wire between the left rear seat heating module (SHMRL) and the heating element is shorted to ground
The wire between the left rear seat heating module (SHMRL) and the heating element is shorted to voltage

What you can do

1Check that the fuses are intact, especially the fuse for the seat heating
2Start the engine, switch on the left rear seat heating and see whether the heat comes on
3Feel along the cable between the seat and the seat heating module for chafing or damage, and check that the connectors are firmly seated
4Use a multimeter to check that the wire to the heating element is not broken and has no contact with ground (the body) or with voltage
5With diagnostic equipment, follow the seat heater status in live data while the heat is switched on and off. The status should change with the button
6If the wire is intact but the fault remains, have a workshop replace the heating element in the seat

Symptoms you may notice2

The electric heating in the rear seat does not work
The rear seat heating does not work or gets too hot

General guidance for car owners. Diagnosis on the car can point to a different cause.