I'm having a ton of problems with my 2004 A4 Ultra Sport Audi. I recently changed the gas pump, fuel filter, spark plugs, coils and now the EPC light and Traction Control light & check engine light are coming on. My car also will stall out while driving. I took it to Auto Zone and I got the code 221 for throttle sensor. Before I replace the throttle body I wanted to make sure this would work or if there might be other things that need to be fixed. I'm planning on selling it so I'm not looking to put a ton of money into it. Thx

 

try cleaning the throtle body first.

 

I replaced the throttle body and it didn't help. Does anyone know if I need to do the throttle body alignment with a vag-com?

I'm still getting codes p0122 and p2101 with no throttle input whatsoever

 

Yes, you do need to adapt the throttle body with VagCom. It should be basic settings channel 60 on your car.

What are the text descriptions of P0122 and P2101? The parts you replaced should not have effected the throttle body operation. It happened right after you worked on the car?

 

Selling it sounds like a great idea as my A4 1.8t is giving me the same problem and already spend a lot on trying to fix it but it doesn't seem to change the EPC, traction and limb mode hence I'm planning to sell it as well