OBD-II code · Chassis
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.
Is it safe to drive with C0595?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPower driver internal fault
- Less likelySensor element aged beyond calibration window
- Less likelySensor mounting loose - signal damping
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–6 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Booster Internal Driver
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.