C0105
ChassisBrake Systemmoderate severityBrake Pedal Position Sensor Circuit Low
What C0105 Means
The brake pedal position sensor signal voltage is below the minimum threshold.
Symptoms
- ABS light on
- Brake assist fault
- Module reads brake as always applied
Common Causes
- Short to ground in sensor circuit
- Faulty sensor
- Low supply voltage to sensor
Diagnostic Steps
- Test sensor signal voltage
- Check for shorts to ground
- Verify supply voltage at sensor
- Inspect wiring harness
Where to start: Repair short circuit or replace brake pedal position sensor.
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