P09A5
Gate Select Position Circuit B High
Generic OBD-II
Common symptoms
What you'll notice
- Check and adjust the gate select position sensor
- Inspect and repair any damaged wiring or connectors related to the gate select position circuit
- Replace the gate select position sensor
Common causes
Most likely first
- Faulty gate select position sensor
- Loose or damaged wiring or connectors in the gate select position sensor circuit
- Issue with the gate select position actuator or solenoid
- Incorrect gate select position adjustment
- Faulty transmission control module
How to diagnose & fix
Work through it in order
- Difficulty shifting gears or changing gears
- Inability to engage or disengage the automatic transmission park feature
- Incorrect gear indications on the instrument cluster
- Malfunctioning or unresponsive gear shift lever
- Problems with the transmission neutral safety switch, such as starting the vehicle without the brake pedal being pressed
Read & clear P09A5 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.