VOLVO
BCM-U300048 - Control Module. System Internal Failures. Supervision software failure
System
Brake Control Module (BCM)
Volvo models this fault code applies to
Applies to the following models:
6 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013)
Show models by year and engine (7)
- 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
What does this fault code mean?
The brake control module (BCM) has registered an internal fault in its monitoring software. The fault lies in the module, which then sends a message to the other modules on the car's network that its information is incorrect. The code is set at ignition on.
Possible causes
- Internal fault in the brake control module
What you can do
- 1Check that the fuses for the brake system are intact; their locations are in the owner's manual or on the fuse box cover
- 2Where possible, check the relevant functions using the switches, controls and a road test
- 3Read the codes and have a workshop troubleshoot them according to the accompanying information with diagnostic equipment
- 4The brake system is safety-critical, so have a workshop carry out any intervention in the brake control module
Symptoms you may notice5
- Information lamp lit
- Traction control warning lamp lit
- Traction control does not work
- Stability function does not work
- Yellow warning symbol and text message in the display
What the fault can affect1
- The BCM notifies the other nodes on CAN that the data it provides is wrong
General guidance for car owners. Diagnosis on the car can point to a different cause.