if the encoder motor was stuck it would likely explain all the wierd stuff because the computer is trying to do one thing but the vehicle is not giving the correct data,
like wheel speed vs differential state or something to that effect... thereby confusing the transmission
if you have access to a scanner that can read body codes, there could be a historical code saved when the error occured "maybe" sometimes they are saved and sometimes not.
the code is not obd. sometimes you have to scan it while the error is present.
