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Trouble codes

Tiny
J7ERRY
  • MEMBER
  • FORD EXPLORER
I have a 2003 Ford Explorer Sport, 85,268 miles and I have trouble codes P0171 Too Lean Bank 1 and P0174 Too Lean Bank 2. Guy at O'Reilly's said it was the upstream oxygen sensors. Wasted $125 because that didn't fix the problem. What can cause these codes and what can I do to fix it? It is 2wd with 4.0 l V-6. Thank you.
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Friday, July 13th, 2007 AT 6:15 PM

2 Replies

Tiny
J7ERRY
  • MEMBER
  • 4 POSTS
I guess you have to make a donation to get an answer on this site. Try www. Automotiveforums. Com for real and free answers
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Wednesday, July 25th, 2007 AT 7:07 PM
Tiny
TERRY442
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I have a 1998 explorer sport w/4.0 V6 w/same problem changed mass air flow sensor and that fixed it.
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Wednesday, August 1st, 2007 AT 3:40 PM

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