Chassis
generic / SAE
C056A
Brake Booster Pressure Sensor Power Supply Circuit
Fault on brake booster pressure sensor power supply circuit. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
SystemChassis
Typegeneric / SAE
GroupC0
Range / number5 / 6A
Possible causes
- Supply wiring fault high
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 50–400 €
- Estimated time: 0.5–2 h
- Component: brake booster pressure sensor
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012