What Does P0805 Mean?
The Clutch Position Sensor (CPS) circuit has a general malfunction. This sensor monitors the position of the clutch pedal and reports it to the PCM or TCM. The data is used for skip shift operation, cruise control disengagement, starter interlock, and idle speed control. The PCM has detected that the signal from the clutch position sensor is absent or irrational.
Common Causes
35%
Failed clutch position sensor
25%
Wiring open or short in the CPS circuit
20%
Misadjusted or displaced clutch position sensor
12%
Corroded connector at the clutch pedal assembly
8%
PCM input circuit fault
Diagnostic Steps
1
Monitor the clutch position sensor PID on the scan tool while slowly pressing and releasing the clutch pedal — the signal should transition smoothly.
2
Inspect the clutch position sensor physically at the clutch pedal assembly for damage, loose mounting, or disconnection.
3
Measure voltage at the CPS connector: verify reference voltage (typically 5V), ground, and signal wire with key on, engine off.
4
Check the wiring harness from the clutch pedal area up through the firewall for damage, especially where it passes through grommets.
5
If the sensor is adjustable, verify proper gap/alignment per the service manual specifications.
Estimated Repair Cost
$50 - $350
Parts + labor, varies by vehicle and location
The Clutch Position Sensor (CPS) circuit has a general malfunction. This sensor monitors the position of the clutch pedal and reports it to the PCM or TCM. The data is used for skip shift operation, cruise control disengagement, starter interlock, and idle speed control. The PCM has detected that th...
The most common cause of P0805 (Clutch Position Sensor Circuit Malfunction) is: Failed clutch position sensor
Typical repair costs for P0805 range from $50 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle can be driven, but cruise control may not disengage properly when the clutch is pressed, and the starter interlock may not function correctly. Use extra caution and verify cruise control disengages with the brake pedal.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0805 to identify the root cause.
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Quick Info
Category
Powertrain
System
Clutch / Transmission Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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