P0919 Gear Shift Position Control Error

P0919 points to a gear shift position control error. The controller commanded gear position control but the mechanism did not reach or hold the expected state.

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 a single actuator from the control error alone; verify the full command-feedback sequence.

Symptoms of P0919

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 P0919

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

Compare commanded gear position, actual feedback, actuator current, clutch actuator state, gate position, and shift timing.
Inspect actuator movement, linkage alignment, mechanical binding, clutch release, position sensor data, wiring, and adaptation status.
Review companion actuator, position, clutch, and control-error codes to identify the primary failed part of the sequence.

Related OBD-II codes

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