VOLVO
BCM-U023500 - Lost Communication With Closing Velocity Module. General Failure Information. General electrical failure
System
Brake Control Module (BCM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
11 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V50 (2004–2013), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (14)
- 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 S60 (2011–)2011–2015
- Volvo S80 (2007–)2008–2015
- Volvo V50 (2004–2013)2011–2012Engine D4162T, D5204T, D5204T5 only
- Volvo V60 (2011–)2011–2012
- Volvo V60 (2011–)2013–2014All engines except: D82PHEV
- Volvo V60 (2011–)2015All engines except: D82PHEV, D87PHEV
- Volvo V60 Cross Country (2015–)2015
- Volvo V70 (2008–)2008–2015
- Volvo XC60 (2009–)2009–2015
- Volvo XC70 (2008–)2008–2015
What does this fault code mean?
The brake control module (BCM) receives no communication from the crash speed module (CVM). The fault may come from interference or intermittent breaks on the CAN network, or from a break or loose contact in the wiring between the BCM and the CVM. The front monitoring function may then not work.
Possible causes
- Interference or intermittent breaks on the CAN network
- Break or loose contact in the wiring between the brake control module and the crash speed module
- Fault in the module that sends the signal
What you can do
- 1Read codes in the central electronic module and other affected modules, and correct them first
- 2If no codes are stored, check the wiring and connectors on the CAN network between the BCM and the crash speed module
- 3Check that the wiring is not routed close to sources of interference, such as mobile phones
- 4Do not replace the brake control module for this code, as the fault does not lie in it
- 5The collision and brake systems are safety-critical, so have a workshop carry out all work on the wiring and the modules
Symptoms you may notice1
- Front monitoring and active safety do not work
General guidance for car owners. Diagnosis on the car can point to a different cause.