I have an Audi A4 2002 3.0. My check engine light has been on the past couple months i had it checked out that said it was nothing major. Now my car is running very rough so i stopped driving it. I pulled the codes off of it and they came up P0102, P0171, P0174, P0300-P0306. I will take it in to a shop if it is something major but i would rather keep it economy friendly and fix it myself if its something easy. Let me know if you have some answers that can help thanks.

 

Some quick googling sugests that cleaning your MAF may help the 0102, 0171 and 0174, make sure to use only MAF cleaner and don't touch any of the wires with your hands or any tools. Also make sure all the wires are hooked up properly.

The 0300-0306 says multiple misfires, seemingly in every cylinder. On the one hand we've got coilpacks that are known lousy, on the other hand I think there is no way all 6 could go bad at the same time.

Sounds like it ought to be not too bad.

 

U might check ur checkvalves also. Sometimes a vac leak will lead to codes being thrown for mutiple misfires.