Audi Repair: AUDI A8 HELP, throttle position sensor, wiring loom

Question
HELLO JAN, I WILL APPRECIATE ANY HELP POSSIBLE,
I HAVE CHANGED TRANNY ON MY 1997 A8 AND AFTER I DID IT CAR IS TOTALLY MEST UP, I USE VAG COM TO RESET COMPS BUT I HAVE A PROBLEM WITH THROTTLE POSITION SENSOR, IT COME BACK RIGHT AWAY ON DTC: 16507 - Throttle Position Sensor (G69): Signal too High
       P0123 - 35-00 -  - I REPLACED IT WITH NEW SENSOR BUT STILL SAME, TRIED EVERYTHING, CHECK ALL WIRES-ALL GOOD, ALSO TRANNY STILL IN LIMP MODE:18033 - Powertrain Data Bus: Implausible Message from TCU
       P1625 - 35-00 -  - AND IT IS IMPOSSIBLE TO ADJUST THROTTLE????????????  GETTING CRAZY WITH THIS CAR

Answer
It sounds like there may be an incorrect electrical connection somewhere.  Did any wires get caught when you did the transmission removal?  Is the transmission an exact replacement of the original?  I would carefully check the throttle position wiring, since you already rpelaced the sensor.  follow it back to see if you can find a cut or chafing in the wiring loom, and check that you are getting the right voltages at the sensor.  Let me know,  Jan