Running lean
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Junior Member
Joined: Oct 2016
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Running lean
I have 2002 f150 fx4 and have the edge evolution programmer and my check engine light is on. Scan codes and it says bank one and bank two or too lean. How do I go about fixing the problem
Senior Member
Joined: Dec 2015
Posts: 23,191
Likes: 8,622
From: Utah
Search the site for P0171 and P0174 solutions. Lots and lots of info on here about it.
The most common problem is the PCV Elbow on the back of the throttle body.... but then that is assuming you have a V8.
The most common problem is the PCV Elbow on the back of the throttle body.... but then that is assuming you have a V8.
