VOLVO
BCM-C102122 - ABS Booster Control Pressure. General Signal Failures. Signal too high
System
Brake Control Module (BCM)
Volvo models this fault code applies to
Applies to the following models:
1 modelV60 (2011–)
Show models by year and engine (2)
What does this fault code mean?
On the V60, the brake control module (BCM) has received too high a signal from the pressure and temperature sensor for the brake booster control pressure. The sensor sends two signals, one pressure and one pressure with temperature, and when the pressure does not match the requested brake pressure, the assist functions can be affected.
Possible causes
- Air bubbles in the brake fluid
- Damaged connector to the brake pedal angle sensor
- Damaged brake pedal angle sensor
- Damaged vacuum pressure sensor
- Damaged pressure and temperature sensor
What you can do
- 1Read and note the code, clear it and road test the car to see whether it returns
- 2Make sure there are no air bubbles in the brake fluid
- 3Look for damage in the wiring and connectors at the brake pedal angle sensor, the vacuum sensor and the pressure sensor
- 4Check the sensors with diagnostic equipment and replace any that are damaged
- 5The braking system is safety critical: do not work on the brake booster or sensors yourself; leave this to a workshop
Symptoms you may notice4
- Hill descent assist does not work
- Hill start assist does not work
- Anti-spin function does not work
- ABS does not work or activates suddenly
General guidance for car owners. Diagnosis on the car can point to a different cause.