Hello I have been trying to get my transmission solenoid code issue fixed, and while test driving the speedometer is suddenly all the way over and seemingly stuck there now on top of the code for shift solenoid A and sometimes B. I have just replaced all 5 shift solenoids and the 5 I replaced tested good and still getting the code and getting stuck in 3rd gear safety fallback.

I am getting the code p0123 "Throttle Pedal Position Sensor/Switch (TPS) A Circuit High Input" since the speedometer is pegged, related? I was going to try to change the TPS out if it is possibly related to the issue with the transmission.