A couple things come to mind; Do not know if they will help you.
How old is the battery? Many electrical problems can be solved with a new battery.
Have you downloaded the most recent update for your scanner? You know the drill, garbage in, garbage out.
Is there a transmission fluid leak; check the electrical connector on the passenger side of the transmission. Also pull up the carpet in the passengers foot well and check the TCU for any signs of moisture both water and transmission fluid. (oil can weep up the wires)
Pull the electrical connectors from the brake master cylinder and the ASB block under the hood, clean the contacts, and reinstall.
After all that is done you must get the codes cleared and start from scratch.
Maybe that will give you some ideas. I hope it was helpful.