P0808
Clutch Position Sensor A Circuit High
Transmission (clutch position sensor)
Generic OBD-II
Medium
What it means
P0808 means the signal from clutch position sensor A is reading too high, above its normal range. On automated-manual and dual-clutch transmissions this sensor tells the control module exactly where the clutch is, so a bad reading leads to poor clutch engagement and shifting problems. The cause is usually the sensor or a short-to-voltage in its wiring.
Medium
Can I keep driving? The transmission may shift poorly, engage the clutch harshly, or drop into a protective mode; drivable in most cases but have it checked soon.
Common symptoms
What you'll notice
- Difficulty shifting or the clutch engaging harshly
- Jerky, delayed, or slipping gear changes
- Transmission may enter a protective/limp mode
- Check-engine light on
Common causes
Most likely first
- Faulty clutch position sensor ALikely
- Short to voltage or an open in the sensor circuit (reads high)Common
- Corroded or loose connector at the sensorCommon
- Damaged wiring in the sensor circuitLess often
- Failed transmission control module (less common)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame and inspect the clutch position sensor connector and wiring.
- Check for a short to voltage or an open that would drive the signal high.
- Measure the sensor's output against spec through its range.
- Replace the clutch position sensor if it reads out of range.
- Relearn the clutch position after repair; evaluate the TCM if the fault persists.
FAQ
Quick answers
Is it safe to drive with P0808?+
Usually yes for short distances, but poor clutch control can cause harsh or slipping shifts, so get it diagnosed before longer trips.
Can I just clear P0808?+
It returns while the circuit reads high; the sensor or its wiring must be repaired, and many transmissions need a clutch-position relearn afterward.
Related codes
Often seen with P0808
Read & clear P0808 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX