P0913 Gate Select Actuator Circuit High

P0913 points to a high gate select actuator circuit. The actuator control path is open, shorted to voltage, or reporting above expected electrical range.

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 a relearn before correcting a high actuator circuit fault.

Symptoms of P0913

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 P0913

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 actuator circuit voltage, continuity, ground, connector fit, open circuits, short-to-voltage faults, and module driver state.
Inspect transmission connector terminals, actuator connector sealing, harness rub points, and recent service that may have disturbed wiring.
Compare gate actuator command with position feedback to decide whether the actuator is electrically disconnected or mechanically stuck.

Related OBD-II codes

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