My check engine light came on a few days ago and I didn't get the code so I did today. It's P0171 Bank 1 Running to Lean. And the guy there said it could be a lot of things. If anyone knows exactly what it is that would help me out a lot. Thanks.

 

Intake/Exhaust leak, AIR system, MAF sensor, fuel pressure/pump, injectors, or HO2s

 

I just did a search here for "PO171" and 2 results came up. Check your vacuum hoses...