Chassis
generic / SAE
C0595
Brake Booster Internal Power Driver Range/Performance
Internal power driver in brake booster controller does not respond as expected. 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 / 95
Possible causes
- Power driver internal fault high
- Sensor element aged beyond calibration window low
- Sensor mounting loose - signal damping low
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 400–2500 €
- Estimated time: 2–6 h
- Component: booster internal driver
- MIL / check engine light
- drive cycle required
- limp mode possible
Sources
References
sae:J2012