I went to autozone today so that they could read the code on my truck and it said my bank 2 was lean. What could cause this? They said anything from maf, egr valve, or vacuum line leak could cause this. What do yall think

 

year, engine?

 

https://www.ranger-forums.com/ranger-forums-office-13/everyone-please-insert-signature-120109/

 

sorry it is a 2002 ranger 4.0l 4x4 automatic
the codes were
p0171: bank 1 lean
p0174: bank 2 lean

 

you might look at this;
http://www.aa1car.com/


also it may indicate that you need a tune-up or it may have a vacuum leak. If it's got a lot of miles on the plugs it can make the o2 sensor show a code for a lean condition just simply because the plugs aren't doing their job anymore.

 

look up vaccum hose elbow