P0808

Clutch Position Sensor A Circuit High

Q: 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.

Q: 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.

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.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

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.

Read & clear P0808 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX