Code Definition

P0808 — Clutch Position Sensor Circuit High Malfunction

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

About P0808

P0808 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 P0808 is stored, the module has detected a signal or supply voltage higher than the expected operating range; and 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 P0808 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

The fault code P0808 is set when the vehicle's powertrain control module (PCM) or transmission control module (TCM) detects a higher than expected voltage from the clutch position sensor circuit. This typically indicates an electrical issue, such as a short to power within the circuit. The clutch position sensor is essential for providing information on the position of the clutch pedal, particularly in vehicles with manual or automated manual transmissions. The high voltage signal may suggest a malfunction in the sensor or its circuit, affecting the accurate detection of the clutch pedal's pos...

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