P0910
Gate Select Actuator Circuit/Open
Transmission / automated shifter
Generic OBD-II
Medium
What it means
P0910 means the transmission control module detects an open circuit in the gate select actuator's control wiring. On automated-manual transmissions this actuator moves the shift mechanism across gear planes, so an open circuit can prevent gear changes or lock the transmission in one gear. The engine still starts and runs — this is a shift-actuator circuit fault.
Medium
Can I keep driving? The engine starts, but the transmission may fail to change gears or stick in one gear — have it checked before driving far.
Common symptoms
What you'll notice
- Check-engine light on
- Delayed, harsh, or failed gear changes
- Transmission stuck in one gear
- Fail-safe (limp) mode
Common causes
Most likely first
- Open or damaged wiring in the gate select actuator circuitLikely
- Loose or corroded connectors at the actuatorCommon
- Failed gate select actuatorCommon
- Failed transmission control module (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the gate select actuator connector and wiring for an open, damage, or corrosion.
- Measure the actuator control circuit for continuity and correct resistance with a multimeter.
- Confirm the actuator receives its command and ground during a shift request.
- Replace the gate select actuator if it is open or unresponsive with wiring confirmed good. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0910?+
The engine runs, but an automated shifter that can't select a gear plane may leave you stuck in one gear, so limit driving until it's fixed.
Can I just clear P0910?+
It will clear, but an open control circuit returns right away until the actuator or wiring is repaired.
Related codes
Often seen with P0910
Read & clear P0910 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