Need Help On Check engine light

[leoncomptech1]

I Have a problem need healp on PO171 and PO174 System Lean Bank 1 and 2

Some one knows what this mean
?????????????????????

 

[hatchling37]

It's a lean condition in both banks of the engine. In my experience, it's been a bad intake manifold gasket, just my $.02

 

[ncranchero]

Provided your 2001 is a job 2 version this is most likely your problem.
http://www.explorerforum.com/forums/showthread.php?t=261852&highlight=PCV+elbow