P0910

Gate Select Actuator Circuit/Open

Severity: High
Driving: Drive only to a garage

An open circuit or general electrical fault in the gate select actuator circuit - the motor or valve that moves the selector shaft across the gate. Without it the module cannot choose which pair of gears to engage, so gear changes will fail.

Possible causes

CommonFailed gate select actuator
CommonCorroded or damaged connector at the gearbox
CommonOpen circuit or broken wire in the harness
PossibleBlown fuse on the actuator supply
PossibleWater ingress at the gearbox connector
RareFailed control module driver

What you might notice

Transmission will not select gears
Car stuck in neutral
Transmission warning message
Check engine light on

What to check, in order

Check the fuses on the actuator supply first.
Inspect the connector at the gearbox for corrosion and water.
Measure the actuator winding resistance against specification.
Check continuity through the harness between the module and the actuator.
Run the calibration procedure after any repair here.

Read this code from your own car

Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.

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Where this code sits

B · Body C · Chassis P · Powertrain U · Network and communication

Transmission and control modules