P0806 Clutch Position Sensor Circuit Range/Performance

P0806 indicates range or performance trouble in the clutch position sensor circuit. The signal moves but does not match expected clutch position behavior.

Code details

Generic OBD-II · P0

System: Transmission
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

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 perform repeated relearns without fixing signal range or mechanical adjustment problems.

Symptoms of P0806

Harsh, delayed, or slipping shifts, or being stuck in one gear.
Check-engine light, sometimes with limp-home mode.
Flaring RPM or a shudder under load.

Common causes of P0806

Low or degraded transmission fluid.
A failing speed sensor, shift solenoid, or pressure-control circuit.
Wiring, connector, or internal hydraulic/mechanical faults.

Useful checks before replacing parts

Graph clutch position data through the full pedal or actuator travel and compare it with expected learned limits.
Inspect sensor adjustment, pedal free play, linkage wear, wiring, connector tension, and reference voltage stability.
Check whether the code follows clutch service, pedal work, actuator replacement, or calibration loss.

Related OBD-II codes

These nearby transmission entries can help compare wording and pin down the fault area.