OBD-II Error Code P0808: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
Error Code
P0808
Brand
OBD-II Generic
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code P0808 indicates the engine control module (ECM) has detected a high voltage signal from the clutch position sensor. This usually means the sensor or its circuit has an issue, such as a short to power or a faulty sensor. Driving with this code can affect clutch engagement and transmission shifting.
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Tools You'll Need

How to Fix Error Code P0808

  1. Check for Other Codes

  2. Inspect Wiring and Connector

    Disconnect the battery before working on electrical components.
  3. Test the Clutch Position Sensor

  4. Check Voltage Supply

  5. Inspect for Short to Power

    Do not short any wires to ground accidentally.
  6. Replace the Clutch Position Sensor

    Ensure the sensor is properly seated and adjusted per manufacturer specs.

Parts You May Need

Clutch position sensor
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Electrical connector pigtail
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Heat shrink tubing
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Clutch position sensor
Check Price on Amazon
Electrical connector pigtail
Check Price on Amazon
Heat shrink tubing
Check Price on Amazon
Clutch position sensor
Check Price on Amazon
Electrical connector pigtail
Check Price on Amazon
Heat shrink tubing
Check Price on Amazon
Clutch position sensor
Check Price on Amazon
Electrical connector pigtail
Check Price on Amazon
Heat shrink tubing
Check Price on Amazon
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When to Call a Professional

If you have no electrical experience, cannot locate the sensor, or the code returns after replacing the sensor, seek a professional mechanic. They can perform advanced diagnostics on the ECM or transmission control module.

Frequently Asked Questions

Can I drive with error code P0808?
It's not recommended. The clutch position sensor tells the ECM when the clutch is engaged or disengaged. A faulty signal can cause harsh shifting, reduced performance, or transmission damage. Drive only to a mechanic if necessary.
What causes a high input on the clutch position sensor?
Common causes include a short to voltage (e.g., 5V or 12V reference), a faulty sensor, damaged connector or wiring, or a problem with the ECM itself.
Where is the clutch position sensor located?
Typically on the clutch pedal assembly inside the cabin, or on the transmission housing near the clutch fork. Consult your vehicle's repair manual for exact location.
How much does it cost to fix error code P0808?
DIY cost is around $20-60 for a replacement sensor plus any wiring repairs. Professional repair can range from $100 to $300 including labor and diagnosis.
Will clearing the code fix P0808?
No. Clearing the code may temporarily turn off the check engine light, but if the underlying fault is not repaired, the code will return.