What does fault code TCM-C003100 mean?

Diagnostic fault code details for TCM-C003100 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo V40 (2013–)). Repair service at OBD Tuning.

VOLVO

TCM-C003100 - Left Front Wheel Speed Sensor. General Failure Information. No sub type information

System

Transmission Control Module (TCM)

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?

As far as the transmission control module is concerned, the left front wheel sensor input is missing or faulty. The wheel sensor gives the brake control module (BCM) the wheel's rotational speed, and the BCM passes the vehicle speed on to the transmission over CAN. Because this code is stored, the fault points to the brake control module, so the fault tracing should start there. The transmission uses a basic value for the signal in the meantime.

Possible causes

The fault lies in the brake control module (BCM)
A CAN wire that is intermittently broken or shorted, linking the brake module to the transmission module
Damaged wheel sensor

What you can do

1Read the fault codes in the CEM and the brake control module, and fix them first. Do not clear TCM-C003100 until the root fault is fixed and its fault code is cleared
2Have a workshop trace the brake control module and the left front wheel sensor with diagnostic equipment
3Drive the car once the fault codes are fixed and see whether the code returns
4The brake system is safety-critical. If you suspect a fault, have a workshop check it

Symptoms you may notice1

No noticeable symptoms for the driver

What the fault can affect1

The transmission control module (TCM) uses a basic value for the signal

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