Error 2796/2B57/2B05/2B07/278C

[S65 SCHNAUZER]

Hi everyone,

So I had a Bimmerworld Exhaust system installed and also stage 2 Alpine flash done to my car.

I'm getting limp mode with codes referencing the pedal sensor 1 and alternator...I changed my alternator just last week and was driving fine until the exhaust install.

Could this be an O2 error? or could the throttle pedal have given out?

Any insight is appreciated.

Thank you