It is also possible that it is not a solenoid issue and you actually have a hard part failure. The system monitors the actions caused by the solenoids by watching what the transmission actually does, so say the solenoid is working and it applies the fluid pressure to the correct port, but the clutch or band is bad, the action that the control module sees is not what it expects for that solenoids action, so it tosses a code saying the solenoid is bad.
However, the best thing to do is as HMAC says, you need the correct scan tool to cycle the various controls and see if they respond correctly.
Sunday, July 9th, 2017 AT 12:40 PM