I have seen people post issues like this but have not seen a real salution.I have pulled and cleared the codes with my ROSS TECH software and continually come up with P0601 along with may module not read of intermitent items not being identified (airbags, door locks, ECT). The car is an 2005.5 Audi A4 2.0T with the BPG motor. The other issue is the car seems to serge at cruising speed and loss of power, I have replaced the diverter valve already.
I am wondering if a computer flash may be the issue or if a new ECM is in order. I would love to take it to the dealer BUT I live in Germany. Along with Audi thinking there stuff is worth twice as much as it should be the dollar to euro exchange rate sucks. Thank you in advance for any help

 

Well I cleared the codes once again and the same one came back up. I have an appointment tomorrow at the dealer my wallet hurts already. I was talking to the head mechanic and he told me the ecm can not be flashed this seem fishy to me any ideas? Also i took apart the dinamic headlight control system and clean everything and the warning light is is still on which I find weird do to the fact is it does its whole self test moving up and down then side to side. This Audi is kicking my ***!!!