P0914 Gear Shift Position Circuit

P0914 indicates a gear shift position circuit fault. The controller cannot reliably read the position signal for the gear shift mechanism.

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 replace the actuator until gear position feedback has been tested directly.

Symptoms of P0914

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 P0914

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

Monitor gear shift position data while commanding or selecting each gear and compare it with actual actuator or lever movement.
Inspect position sensor reference, signal, ground, connector fit, linkage movement, actuator travel, and wiring through flex points.
Check companion gate select, actuator, clutch, or control-error codes to determine whether feedback or motion is failing.

Related OBD-II codes

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