The computer sees a fault in shift solenoid A. The driver may notice harsh shifts, missing gears or a stuck gear.
Likely causes, most common first
- Faulty shift solenoid
- Damaged wiring or connector
- Low or dirty transmission fluid
- Valve body fault
Parts usually involved
- Shift solenoids
- Transmission connector
- Transmission fluid
- Valve body
Test before you replace
Check fluid level and condition, then measure the solenoid resistance and command it with a scan tool.
General guidance for generic OBD2 codes. Always follow the maker's procedure for the car in front of you.