Sometimes the car starts in EPC mode and runs pretty rough. Try fixing several

What is your question?

OBD2 codes P0458, P0034, P0245, P2401, P2295,P0031, P0036. We have changed the fuel filter, the battery, the turbo booster solenoid, spark plugs, coils. Car ran great for 5 days but now it is back to EPC mode.

What makes this problem better or worse?

Resetting the codes and restarting the car works for a day or two.

How long has your 2007 Audi A4 had this problem?

One month