OBD-II code · Powertrain (generic)
P05DB Brake Pedal Position Sensor B Circuit Open
The brake pedal position sensor B has an open control circuit. The ECU loses analogue feedback about pedal travel - used by stop-start, regenerative braking and adaptive cruise to coordinate engine, motor and friction brakes.
Is it safe to drive with P05DB?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in sensor or wiring
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.4–1.4 h
- Emissions test
- Usually unaffected
- Parts involved
- Brake Pedal Position Sensor B
Related codes
- P057ABrake Pedal Position Sensor A Circuit Open
- P05D8PCV Regulator Valve Control Circuit Open
- P05D9PCV Regulator Valve Control Circuit Low
- P05DAPCV Regulator Valve Control Circuit High
- P05DCBrake Pedal Position Sensor B Circuit Range or Performance
- P05DDBrake Pedal Position Sensor B Circuit Low
- P05DEBrake Pedal Position Sensor B Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.