The transmission computer has stored a fault and asked for the engine light. The driver may notice harsh shifts or a stuck gear.
Likely causes, most common first
- Stored fault in the transmission computer
- Low or dirty transmission fluid
- Faulty solenoid or speed sensor
- Wiring fault
Parts usually involved
- Transmission fluid
- Shift solenoids
- Speed sensors
Test before you replace
Read the codes in the transmission computer with a suitable scan tool, since this code only points there.
General guidance for generic OBD2 codes. Always follow the maker's procedure for the car in front of you.