The transmission control module (TCM) has detected that the shift solenoid A circuit has an electrical problem. This could be caused by a faulty shift solenoid, a wiring problem, or a problem with the TCM.
Possible causes:
- Faulty shift solenoid A
- Wiring problem
- Problem with the TCM
Symptoms:
- Check Engine Light on
- Transmission may shift erratically or not at all
- Loss of power
- Transmission may overheat
Repair:
- Replace the shift solenoid A
- Repair or replace the wiring
- Replace the TCM
Additional Information
The shift solenoid A is responsible for shifting the transmission into second gear. If the shift solenoid A fails, the transmission will not be able to shift into second gear, which will cause the vehicle to lose power and the Check Engine Light to come on.
If you experience any of the symptoms listed above, it is important to have your vehicle diagnosed by a qualified technician as soon as possible.
