Chassis
generic / SAE
C0131
Master Cylinder Pressure Sensor Range/Performance
The ABS or stability control module has detected an implausible signal from the master cylinder brake pressure sensor. This sensor reports driver brake input and is used by ABS and ESP for control decisions.
SystemChassis
Typegeneric / SAE
GroupC0
Range / number1 / 31
Possible causes
- Pressure sensor failed high
- Wiring or connector fault medium
- Air in brake system causing erratic pressure low
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–700 €
- Estimated time: 0.5–2.5 h
- Component: master cylinder pressure sensor
- Component: abs control module
- Component: esp control module
Sources
References
sae:J2012