VOLVO
BCM-U010100 - Lost communication with Transmission Control Module (TCM). General Failure Information. No sub type information
System
Brake Control Module (BCM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–)
Show models by year and engine (9)
- Volvo C30 (2007–2013)2011–2013Engine D4162T, D5204T, D5204T5 only
- Volvo C70 (2006–2013)2011Engine D5204T, D5204T5 only
- Volvo C70 (2006–2013)2012–2013All engines except: B5254T7
- Volvo S40 (2004–2013)2011–2012Engine D4162T, D5204T, D5204T5 only
- Volvo V40 (2013–)2013–2015
- Volvo V40 Cross Country (2013–)2013–2015
- Volvo V50 (2004–2013)2011–2012Engine D4162T, D5204T, D5204T5 only
- Volvo V60 (2011–)2013–2014Engine D82PHEV only
- Volvo V60 (2011–)2015Engine D82PHEV, D87PHEV only
What does this fault code mean?
The brake control module (BCM) cannot make contact with the transmission control module (TCM) on the CAN network, or the communication is disturbed. The stability functions then cannot receive information about the gearbox. The fault most often comes from interference or intermittent breaks on the network rather than from an internal fault in the brake control module.
Possible causes
- Interference or intermittent breaks on the CAN network
- Fault in the transmission control module (TCM)
What you can do
- 1Read codes in the central electronic module and any other affected modules first, and correct them before this code is cleared
- 2If no codes are stored, check the CAN wiring between the brake control module and the transmission control module for breaks and shorts
- 3Check that the wiring is not routed too close to sources of interference, such as mobile phones
- 4Clear the code only once the other codes are corrected, and check that it does not return after a road test
- 5The brake system is safety-critical, so have a workshop carry out any work on the wiring and the modules
Symptoms you may notice4
- Traction control warning lamp lit
- Stability function does not work
- Traction control does not work
- Anti-skid function does not work
What the fault can affect3
- Stability control is disabled
- Traction control is disabled
- Dynamic stability control (AYC) is disabled
General guidance for car owners. Diagnosis on the car can point to a different cause.