What does fault code CCM-B103701 mean?

Diagnostic fault code details for CCM-B103701 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo V40 (2013–)). Repair service at OBD Tuning.

VOLVO

CCM-B103701 - Right 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 and has registered that the heating element in the right rear 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 right rear seat then fails to come on.

Possible causes

Open circuit in the wire between the seat heating module (SHM) and the heating element
Short to ground in the wire from the seat heating module (SHM) to the heating element
Short to voltage in the wire from the seat heating module (SHM) to the heating element
Open circuit in the wire from the right rear seat (SHMRR) to the heating element
Short to ground in the wire from the right rear seat (SHMRR) to the heating element
Short to voltage in the wire from the right rear seat (SHMRR) to the heating element

What you can do

1Check that the fuses are intact, especially the fuse for the seat heating
2With the engine running, switch on the right rear seat heating and feel whether the seat becomes warm within a short while
3Inspect the wiring to the right rear seat for chafing, crushing and broken wires, especially where it moves when the seat is adjusted
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 status and current temperature of the right rear seat heating in live data while the heat is switched on and off
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.