Code Definition

P0805 — Clutch Position Sensor Circuit Malfunction

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0805

P0805 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0805 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0805 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

Fault code P0805 is set when the vehicle's powertrain control module (PCM) or transmission control module (TCM) detects a malfunction within the clutch position sensor circuit. This sensor is responsible for providing information about the position of the clutch pedal, which is critical for the operation of the transmission, particularly in vehicles with manual transmission or automated manual transmission systems. The fault is often triggered when the signal from the clutch position sensor is out of the expected range or is erratic.

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