2000 Nissan Maxima P0171 and P0174 issue

2000 NISSAN MAXIMA
136,000 MILES • 6 CYL • 2WD • AUTOMATIC
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BGLASSCO
  • MEMBER
  • 1 POST
I had it tested and it coded P0171 and P0174 lean on both banks. I have already replaced the O2 sensor and cleaned the MAF sensor. My question is were do I go from here? I heard it could be the fuel filter, I have never changed the filter it is still the factory filter and if I do need to change it how hard is it to replace and can I do it in my garage?
Nov 10, 2008 at 5:57 PM
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ZACKMAN
  • ✓ASE Certified Mechanic
  • 4,202 POSTS
  • ASE Certified Mechanic
Lean on both banks can only mean you have a vacuum leak. You just need to find where it is leaking from.
Nov 11, 2008 at 9:47 PM
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