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
what does system to Lean Bank 1 on 740iL 2001 means
How to fix bank 1to lean on a 3100 v6
system to lean bank one 02 sensor ?
Trouble code P0171 means:System too lean (Bank 1)
Trouble code P0171 means:System too lean (Bank 1)
check the maf sensor
lean bank 1 lean bank 2 fuel trim limits reached
Fuel system lean bank number 2Fuel system lean bank number 2
PO171 = system adaptive fuel too lean (bank 1) PO174 = system adaptive fuel too lean (bank 2)
Trouble code P0171 means: Fuel Trim System Lean (Bank 1) Trouble code P0174 means: Fuel Trim System Lean (Bank 2)
Trouble code P0171 means: Fuel System Too Lean (Cylinder Bank 1)
Trouble code P0171 means:System too lean (Bank 1)