Thanks for your reply! I forgot to mention that, it's not an SC model. When I had the codes checked the guy at the local Autozone store said it could be something like an issue with the catalytic convertor. He also said it could go for a long time without any real issues. It is still running great with no apparent issues but the CEL is still on and I have driven it quite a bit. I just don't want something to go wrong because I didn't do something. I really like my X and don't want to screw something up. I bought a Chilton's manual to learn more about it and so I can do some of the maintenance stuff. I joined this forum shortly after buying the X and have learned a lot already. Thanks again for your help!