P0917 Gear Shift Position Circuit High

P0917 points to a high gear shift position circuit. The position signal is above expected range, open, or shorted to voltage.

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 condemn the control module until the high position circuit is isolated from wiring and connector faults.

Symptoms of P0917

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 P0917

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

Check gear position signal, reference, ground, connector continuity, open circuits, short-to-voltage faults, and module input voltage.
Inspect connector corrosion, harness damage, sensor mounting, actuator travel, water intrusion, and recent transmission service points.
Compare live position data with commanded gear selection to see whether the high value is fixed or movement-related.

Related OBD-II codes

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