VOLVO
BCM-C111801 - Brake Booster Release Switch. General Failure Information. General electrical failure
System
Brake Control Module (BCM)
Volvo models this fault code applies to
Applies to the following models:
13 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (16)
- 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–)2007–2015
- 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–)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 pedal pressure sensor, which is located in the brake booster, tells the brake control module when the brake pedal is pressed. The module uses the signal to switch off the stability function and brake assistance. The code is set when the signal is missing or too high or too low, and it can only be detected once the test has started.
Possible causes
- Break in the signal wire
- Signal wire shorted to supply voltage
- Signal wire shorted to ground
- Damaged pressure sensor
- Internal fault in the brake control module
What you can do
- 1Check that the fuses are intact; their locations are in the owner's manual or on the fuse box cover
- 2Where possible, check that the relevant functions work using the switches, controls and a road test
- 3Read the brake pedal sensor status with diagnostic equipment and check the wiring for breaks and shorts
- 4Correct the fault as needed and clear the code
- 5The brake system is safety-critical, so have a workshop carry out any work on the brake booster and the brake control module
Symptoms you may notice2
- Adaptive cruise control does not work
- Cruise control will not engage
General guidance for car owners. Diagnosis on the car can point to a different cause.