Hi,
The code is related to the transmission, but won't prevent it from starting.
Has the mobile mechanic check to confirm there is spark and fuel to the engine? Take a look through this link and let me know if it helps:
https://www.2carpros.com/articles/car-cranks-but-wont-start
If the starter is turning the engine, chances are one of the two things I mentioned is missing (spark/fuel).
Let me know. Also, if you can, see if it starts for a couple seconds using starting fluid. If it does and then stalls, we will know it is a fuel related issue. If it doesn't try to start, then it will likely be ignition related.
Let me know.
Joe
Friday, October 9th, 2020 AT 9:41 PM