I just got a P0341 on my 2000 Saturn SL1.
I read somewhere that a guy replaced the spark plug wires and spark plugs and the problem went away. So, I bought some new plugs, gapped them to .040 and installed. Borrowed a scantool to reset the computer and so far the problem is gone. Tomorrows drive to/from work should settle the issue. By the way, the gap on the old plugs was cyl. #1 - .047, cyl #2 - .040, cyl #3 - .047, cyl #4 - .043, so it is possible that just cleaning and regapping might of worked, but the little maintenance cheat sheet says replace the plugs every 30,000 miles, well after 55,000 miles, I figure maybe I ought to do it.