2002 Ford f150 system too lean Source Source Source Source Source Source Source Source Source Source Read Also: Ford f150 lean bank 1 lean bank 2 P0174 system too lean bank 2 ford f150 Lean bank 1 and 2 ford f150 2002 Ford windstar bank1 too lean 2001 Ford f150 system too lean 1998 Ford f150 system too lean