P0171 and P0174 codes on 2000 Ford Explorer XLS

Tiny
SUPERHOJON
  • MEMBER
  • FORD EXPLORER
I went to Autozone to get the code read for my Check Engine light. The codes were P0171 and P0174 which translate to: System too lean for Banks one and two. What could be causing this error to occur?
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Tuesday, May 23rd, 2006 AT 1:11 PM

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Tiny
LOSONE
  • MECHANIC
  • 1,616 POSTS
Lean systems could be a faulty O2 sensor. Does the truck run ok or does it slug?

The Zone doesn't have the capability to run a data stream diagnostics. Find a good shop and let them diagnose it for you. They will look at the computer data and see what is causing the lean condition. Good luck
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Tuesday, May 23rd, 2006 AT 2:09 PM

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