Chassis
generic / SAE
C0279
Brake Booster Boost Sensor Circuit Malfunction
The brake control module has detected an electrical fault in the booster boost (assist pressure) sensor circuit. Power-assist regulation may default to a backup strategy.
SystemChassis
Typegeneric / SAE
GroupC0
Range / number2 / 79
Possible causes
- Boost sensor failed high
- Sensor wiring or connector fault medium
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: brake booster
- Component: boost sensor
- Component: brake control module
Sources
References
sae:J2012