A fault code doesn’t yet mean the unit or sensor itself is faulty: often it’s the plug and connector leading to it.
Possible causes
- The sensor is misaligned or its mounting at the pedal is loose
- The sensor itself
- A floor mat or object stops the pedal returning
What you can do yourself
- Without this sensor’s signal cruise control, ESP and brake assist may not work, and on some cars the brake lights too.
- After the pedal position sensor is replaced it is learned with a scan tool.
- Check that the brake lights work: ask someone to watch while you press the brake. If they don’t light, drivers behind won’t see you braking — fix it as soon as possible.
Stop and don’t drive on if:
- The red brake light is on, or the brake pedal feels soft or sinks
- The steering became very heavy, or the car pulls to one side when braking
The explanation comes from the error code reference in the AvtoElektrik PRO app.