Chassis
generic / SAE
C056D
Brake Pedal Position Sensor Supply Voltage Circuit Low
Brake pedal position sensor supply voltage below expected range. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemChassis
Typegeneric / SAE
GroupC0
Range / number5 / 6D
Possible causes
- Supply wire shorted to ground high
- Connector pins corroded - high contact resistance low
- Harness chafing through insulation low
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 50–400 €
- Estimated time: 0.5–2 h
- Component: brake pedal sensor
- Component: sensor supply
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012