Audi A3 fault code problem

[enagize91]

Heey its a wired story.

someone called me to make tune for hes car + egr off.

i went to hes place and took out the ecu, i made tune and egr off for the car edc17cp46

i took ecu back to car, car cranks 5-7 sec before is start , glow plug is blinking , engine fault. and very slow power

i checked files a few times tried with original file, now same problem. i think meybe something is wrong with ecu. i got new ecu made clone with original files, and same problem.

fault code is p0651 sensor reference voltage B circuit open and its permanent cant delete.

[Meat-Head]

Did you cut off a security shield and catch any wires