P0171

  • Tiny
  • JohnnyDIrishman
  • 2004 KIA SORENTO
  • 110,000 MILES

Check engine light came on and I have a code P0171. Runs rough at idle but great otherwise. Any help please?

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Wednesday, April 17th, 2013 AT 8:07 AM

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  • Tiny
  • Hmac300
  • EXPERT
  • 45,647 POSTS

That is a code for a lean condition on one bank. Check your fuel pressure it may be low causing this. Should be 46.9-48.3 with vacuum disconnected if lower than that your pump may be going. System too lean bank 1
maybe an injector or intake leak or fuel pressure or exhaust leak. Will need to have hooked up to a scan tool and run diagnostics

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Wednesday, April 17th, 2013 AT 8:12 AM

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