P0171 bank 1 and P0174 bank 2
So you have to remove the intake manafold to reach the pvc line? I was told that that code means cracked manfold. I have been having the same code pop up for some years know and I have heard alot of diffent solliutions. I know I have replaced the o2 sensor twice in 7 years. I have an 2003 f-50 stx 4.2. What about the exahust like the other guy was talking about?