I threw a code on the SEL light and when I scanned it I get P0171 which translates to 'System Too Lean (Bank 1)' I cleared the code to make the light go away, but what does it mean? I threw another code just recently that was related to using regular instead of premium, or so I was told. Is this related to that maybe?
Thanks for any help in advance.
It's a 2002 MCS with no modifications to the engine.
Will

 

I should have looked further before posting this question. Found the answer in the first sticky and have already resolved the problem. During one of my forays under the hood, I knocked the pvc hose off. Hopefully that fixed it. But if it didn't I have lots of other things to check out now.
Thanks, Will