P0911
Gate Select Actuator Circuit Range/Performance
Transmission / shift actuator
Generic OBD-II
Medium
What it means
P0911 means the gate-select actuator circuit is out of its expected range or performance. On an automated-manual transmission this actuator moves the shift mechanism across the gear 'gates' to select which gears are available. A fault here can cause improper shifting or leave the transmission unable to select a gear.
Medium
Can I keep driving? Engine starts, but on an automated-manual transmission the car may shift poorly, get stuck in a gear, or refuse to move — fix promptly.
Common symptoms
What you'll notice
- Transmission does not shift properly
- Check-engine or transmission warning light on
- Harsh or delayed shifting
- Vehicle may get stuck in gear or fail to move
Common causes
Most likely first
- Faulty gate-select actuatorLikely
- Damaged wiring or connectors in the actuator circuitCommon
- Corroded or loose electrical connectionsCommon
- Faulty transmission control module (TCM)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the actuator connector and wiring.
- Check for correct power, ground, and control signals at the actuator.
- Test the gate-select actuator against specification.
- Replace the actuator if faulty; evaluate the TCM only if wiring and actuator test good. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0911?+
Not reliably — the transmission may fail to shift or move. Have it repaired before depending on the car.
Can I just clear P0911?+
It clears, but returns whenever the actuator fault recurs. Repair the circuit or actuator first.
Related codes
Often seen with P0911
Read & clear P0911 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX