P0918

Gear Shift Position Circuit Intermittent

Severity: High
Driving: Drive only to a garage

The gear shift position signal is dropping out intermittently. Gear changes work, then occasionally fail, often leaving the car in neutral until it is restarted. Look at connections before components.

Possible causes

CommonLoose, corroded or backed-out connector pin at the gearbox
CommonChafed or fatigued wiring
CommonWater ingress into the connector
PossibleSensor dropping out when hot
PossibleWorn sensor track losing signal at one position

What you might notice

Occasional failure to change gear
Car dropping into neutral and recovering after a restart
Fault linked to heat, bumps or wet weather
Check engine light coming and going

What to check, in order

Note when it happens - hot, over bumps, or in the wet. That single observation locates most intermittent faults.
Wiggle-test the harness at the gearbox with the live data screen showing shift position.
Inspect the connector for a backed-out pin.
Run the calibration and see whether the fault returns.
Record the freeze frame data if the tool supports it.

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