I have an 09 G6 that says Engine power reduced and the error code it gave was P2127 I think and it said gas pedal sensor/ throttle position sensor bad. So I changed the pedal, then the Trottle body sensor, cleaned the throttle body and more general maintenance only to have none of that work. Now it throws the same 2127 error code but says APP circuit low now. Apparently the previous owner cut a bunch of wires and didnt connect back right so my uncle, a long time certified mechanic, fixed what he could but now thinks maybe bad wiring and no ground or something like that burned the computer up. Has anyone else ever had a similar issue? If I have to get a whole engine wiring harness it's not even worth keeping the car. Please Help lol!