E 150 1/2 Ton Van V6-4.2L VIN 2 (1997)
^
Lean shift in fuel system operation - P0171 (Bank 1) and P0174 (Bank 2)
^
Rich shift in fuel system operation - P0172 (Bank 1) and P0175 (Bank 2)
^
Lean shift in fuel system operation - P0171 (Bank 1) and P0174 (Bank 2)
^
Rich shift in fuel system operation - P0172 (Bank 1) and P0175 (Bank 2)