pm'd. good luck.

 

Problem solved, got a new ICM, the 2/4 coil was bad.

 

I have a 98 A4. The CEL was flashing and engine running rough. Would smooth out sometimes. Want to a garage that work in Audi's, plugged it in to the scanner had to replace coil packs, plugs and wires. Runs like a champ. O2 sensor have there own codes. If it goes to long, you are dumping raw fuel into the exhaust system, the cats will go bad. You might get a code that states "bank 1 or 2 below ....." That is what happened to me.

 

Dude im having the same problem and changed the icm&the mass airflow sensor and isnt either,if you fig it out please let me know,ill do the same