P0805 Clutch Position Sensor Circuit

P0805 points to the clutch position sensor circuit. The controller detected a fault in the signal used to determine clutch pedal or clutch actuator position.

Code status

Needs verification

Not yet verified against SAE J2012_202509 / J2012DA. Treat unverified rows as a lookup aid, not repair authority.

System: Transmission
Scope: iso-sae-controlled-p0
Standard: SAE J2012 / ISO 15031-6
Source: legacy-import

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace clutch hardware before checking the clutch position sensor signal and adjustment.

Useful checks before replacing parts

Compare clutch position data with pedal movement or actuator command using scan-tool data if available.
Inspect sensor wiring, connector condition, adjustment, pedal or actuator linkage, reference voltage, and ground.
Review start-interlock, cruise cancel, rev-hang, shift, or automated-manual symptoms that depend on clutch position.

Related OBD-II codes

These nearby transmission entries can help compare wording and fault area. They may share the same verification status as the source database.