OBD-II code · Chassis
C066D Service/Park Brake Chamber Pressure Sensor
Generic fault on service/park brake chamber pressure sensor — used on air-brake systems with combined service and spring-applied parking brake chamber.
Is it safe to drive with C066D?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPressure sensor failed
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Service Park Brake Chamber Pressure Sensor
Related codes
- C066ARight Rear Wheel Speed Sensor B Intermittent/Erratic
- C066BRight Rear Wheel Speed Sensor B Correlation
- C066CRight Rear Wheel Speed Sensor B Incorrect Component Installed
- C066EService/Park Brake Chamber Pressure Too High
- C066FService/Park Brake Chamber Pressure Too Low
- C0670Electric Park Brake Actuator Left Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.