Greg,
I lived with the CEL for about a week until I saw you can shut these bank sensors off. Do a search on 02 simulators, but with the diablo tune I will send you, Steve fixed it in my last tune. Not a problem since. I have changed computers, so I either need to boot the old one to get the tune, or download from my tuner after I upload the needed software. I promise I will send it to the 3 that requested.