I don't know a lot about cars and dont have money to pay for somebody that does. I was just looking for helpYour title says OBD2 reads a coil pack. Your post says nothing of this. Plus, an OBD2 CANNOT identify a bad part. Codes can only report symptoms. In this case most likely a misfire which can be caused by at least a half dozen different things.
Not sure about the code but the engine seems alright it has a shudder in the idle like a plugs fouled. I havent got on it since the knock started. Oil pressures good. I just changed the oil so its still good. It seems like its kinda slipping though. Not all the time. Its an automatic but it slips a little between 3rd and D. Im not sure if that has anything to with anything though. Never did it before-Is your "check engine light" ON or do you just have a knock ?
-Is your engine power reduced or does it seem OK ?
What code do you have ?
Same same, but I am older and only work as needed. I'm what used to be called a tin knocker!and i work construction