Replaced upstream and downstream sensor code P0171 appears how can I eliminate it?

Question

2001 Nissan Maxima V6, I replaced upstream and downstream sensor code P0171 appears how can I eliminate it?

Answer 1

HI there,

Start by checking for leaks on bank 1 at the intake manifold. Most of the time with these it's been my experience with this code the issue is with the mass air flow sensor.

Answer 2

P0171 Nissan Code - Fuel Injection System Too Lean Bank 1
Read more: https://www.autocodes.com/p0171_nissan.html