P08B8Clutch Pedal Position Sensor B Circuit Intermittent/Erratic
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P08B8 is intended for a second clutch pedal sensor whose signal drops out briefly or jumps without staying out of range. No manufacturer documents this code publicly. Ford, the only maker found to publish sensor B codes, lists just low (P08B6), high (P08B7) and the A/B comparison (P08B9) for its dual PWM pedal sensors, so short glitches there would most likely surface as a correlation fault; GM covers sensor A only. CARB requires circuit and plausibility monitoring of such inputs. Likely culprits are worn connector terminals or a wire fatiguing where the harness moves with the pedal. Sensor A's counterpart is P08AB. Drivers may see start-stop drop out now and then.
- What you may notice
- Start-stop dropping out intermittently
- Warning lamp that comes and goes
- Likely causes
- LikelyLoose or worn terminals in the sensor B connector
- PossibleWire fatiguing where the harness flexes with pedal movement
- PossibleSensor B producing glitches internally
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €50 – €300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.