P0907
Gate Select Position Circuit A High
Transmission / shift control
Generic OBD-II
Medium
What it means
P0907 means the controller sees an abnormally high voltage on the gate-select position circuit "A", which tracks the shift gate on automated or robotized manual transmissions. The engine starts and runs, but without an accurate gate-select reading the transmission may shift poorly, show the wrong gear, or enter a fail-safe mode until the sensor or wiring is fixed.
Medium
Can I keep driving? The engine runs, but an automated/robotized transmission may shift poorly or enter a fail-safe mode with limited gears — get it checked soon.
Common symptoms
What you'll notice
- Check-engine light on
- Difficulty or failure to shift smoothly
- Wrong or missing gear shown on the display
- Erratic gear selection or limp mode
Common causes
Most likely first
- Faulty gate select position sensorLikely
- Open or short-to-power in the gate-select circuitCommon
- Poor ground or corroded sensor terminalsCommon
- Loose or damaged connector at the sensorLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and note when the high reading occurs.
- Inspect the gate select position sensor connector, terminals, and ground for corrosion or damage.
- Check the circuit for an open or short-to-power and verify the sensor's signal range on a scan tool.
- Repair wiring/ground faults, then replace the sensor if it still reads high. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0907?+
Short-term only. Without an accurate gate-select signal the transmission may shift poorly or limp. Have it diagnosed before longer drives.
Can I just clear P0907?+
It returns until the sensor or wiring is repaired. Clearing only resets the light.
Related codes
Often seen with P0907
Read & clear P0907 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