lean bank 1 lean bank 2 fuel trim limits reached
Fuel system lean bank number 2Fuel system lean bank number 2
P0171-system too lean bank 1 and P0174-system too lean bank 2
Type your answer here... how to fix lean bank 1 bank 2 on 2001 f150 check gpm on your mass air flow, check fuel filter also very very common is the pcv vacuum hose at the very back of engine ( hard to get to) on the upper plenum
plugged fuel filter or intake leak
1999 Ford Taurus. System Adaptive fuel too lean banks 1 and 2. How can I fix these.
P0171, system too lean (bank 1). P0174, system too lean (bank 2). Start with checking for a vacuum leak.
It is rich or lean bank 1 or 2 i am not sure which one it is but i know it is rich or lean code they have the same codes as ford.
Trouble code P0171 means: Fuel Trim System Lean (Bank 1) Trouble code P0174 means: Fuel Trim System Lean (Bank 2)
If you are getting codes for bank 1 and bank 2 lean, then yes it is a possibility.
Bank 2 running too lean.
PO171 = system adaptive fuel too lean (bank 1) PO174 = system adaptive fuel too lean (bank 2)