Hello Everyone! I'm new to Audi Forum so i hope this thread finds you well.


I have a problem with my Audi A4 Quattro 2.0T. Basically after i changed my Car Battery (after it died) my car started shaking when i start the car so i run into some diagnostic tool and i found that my Cylinder 3 is misfire ( Scan Tool Found This problems: P0303 - Cylinder 3 - Misfire Detected, P0089 - Fuel pressure regulator 1, P0010 - Camshaft position actuator)


So I started to change coil and spark plugs i found that Cylinder 3 was covered in Oil, So i changed my Value Gasket as well and x4 New Coil and Spark Plugs. Started The Car, After the first Code Clear it runs perfect but after 5-10 km the problem of shaking started again, i did another Scan with ELM OBD2 and i found the codes were still there (P0010,P0089,P0303)


I am mostly worried about the Misfire because i can replace the (Low Fuel Sensor and the Camshaft Sensor) but i am not understanding why my Cylinder 3 - Misfire. ( note: i tried to swap coils & spark plugs slots, from 1 to 2 then 3 then 4 but still Cylinder 3 Misfire)


[Solved] The problem was bad wiring. I had to make new line of wires because they was all broken (burn out from temperature or i don't know the reason). New Wires solved