P08A8Clutch Pedal Position Sensor A Circuit Range/Performance
- 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
- P08A8 flags a clutch pedal sensor whose signal is electrically valid but contradicts how the car is actually driving. GM uses it on manual cars since model year 2018 (before: P0806), e.g. the LV7 1.4 L engine and the 2019 Corvette ZR1 (LT5): when engine speed to output shaft speed shows that a gear is engaged and transmitting torque, but the pedal reads as pressed, the filtered position error must stay below 4 %. Enabled above 4.3 mph (LT5: 5.6 mph), not in 4WD low, torque above a table, no circuit, crank or speed sensor faults; Type A, MIL after one trip. Circuit faults are P08A9/P08AA. Typical result: start-stop and cruise control off, and the engine computer may misjudge clutch state.
- What you may notice
- Malfunction indicator lamp on
- Start-stop and cruise control switched off
- Rev-matching or hill-start functions may be disabled
- Likely causes
- LikelySensor loose or misaligned on the pedal bracket, so its reading no longer matches pedal travel
- PossibleWorn or drifting sensor track giving an offset signal
- PossibleDriver resting a foot on the clutch pedal, or a floor mat holding it down
- RareCorroded connector adding resistance to signal or ground
- 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 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.