engine misfire cylinder one

My ses light came on again. went to auto zone and had the code read. he said cyloinder one was misfiring and thae o2 sessor was bad. I looked at the wires and coil, and they look good no arcing any suggestions?

Please supply the actual codes.

We really need the actual codes, what year is this truck, engine, etc.

I found the problem the wires were arcing. I put it in the shop for a tune up and it runs great. I wish I would of done it myself and saved the money.

Too bad you gave up so easily.