What Does P0806 Mean?
The Clutch Position Sensor circuit is reporting a signal that is outside the expected range or is not performing correctly during clutch operation. Unlike a total circuit failure, this code means the sensor is communicating but its readings are erratic, inconsistent, or do not match expected values for the clutch pedal position. This suggests a sensor that is drifting, sticking, or has a partial failure.
Common Causes
30%
Worn or degraded clutch position sensor with erratic output
25%
Clutch position sensor out of adjustment or mounting loosened
20%
Intermittent wiring connection causing signal dropout
15%
Clutch pedal mechanism worn causing inconsistent sensor actuation
10%
Reference voltage fluctuation from PCM power supply issue
Diagnostic Steps
1
Graph the clutch position sensor signal on the scan tool while slowly pressing and releasing the clutch — look for dropouts, spikes, or dead spots in the signal.
2
Inspect the clutch pedal mechanism for excessive play, worn bushings, or a weak return spring that could cause inconsistent sensor readings.
3
Verify the clutch position sensor mounting is secure and properly aligned with the clutch pedal arm or actuating mechanism.
4
Wiggle the CPS wiring harness and connector while monitoring the signal on the scan tool to detect intermittent connections.
5
Measure the 5V reference voltage at the sensor connector — it should be stable and not fluctuating under load.
Estimated Repair Cost
$50 - $400
Parts + labor, varies by vehicle and location
The Clutch Position Sensor circuit is reporting a signal that is outside the expected range or is not performing correctly during clutch operation. Unlike a total circuit failure, this code means the sensor is communicating but its readings are erratic, inconsistent, or do not match expected values ...
The most common cause of P0806 (Clutch Position Sensor Circuit Range/Performance Malfunction) is: Worn or degraded clutch position sensor with erratic output
Typical repair costs for P0806 range from $50 to $400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle can be driven with caution. Cruise control disengagement on clutch press may be unreliable. The starter interlock may behave intermittently. Avoid relying on cruise control until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0806 to identify the root cause.
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Quick Info
Category
Powertrain
System
Clutch / Transmission Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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