epc light keeps coming on

[ronzi666]

HI EVERY1,IVE ALREADY POSTED THIS ,BUT AS A NEWBIE,LOL,OUT ON MAIN FORUM.DDUURRRGGHH??ANYWAY,EPC LIGHT KEEPS COMING ON.IVE SPENT LOADS ON THIS A4 AND CANT EVEN SELL IT AS NOT RUNNING,TOO MUCH TO LOSE ON IT??BASICALLY STARTED WITH THE COLD START,SO REPLCED THAT,THEN THE MAP SENSOR,AIRFLOW MASS SENSOR,CAT,ECU,ECU RELAY,FUEL PUMPS(BOTH)NOX SENSOR,IAT SENSOR,FULL SERVICE,AND I HAVE STILL GOT THE PROBLEM,HAS ANYONE GOT ANY IDEAS PLEASE,AS IM SERIOUSLY LOSING FAITH IN AUDI ENGINEERING??DONT WANT TO GO BACK TO VW,BUT NEVER HAD A PROBLEM WITH ME VR6.PLSPLSPLS AY1.TY