1998 Ford Ranger Correct a P0171,P0174 code output

1998 FORD RANGER
160,000 MILES • 6 CYL • 2WD • AUTOMATIC
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QAZWSX
  • MEMBER
  • 1 POST
How do I correct the situation
(P0171,P0174)

System Adaptive Fuel To Lean (Bank1)
...........................................(Bank2)

thanks
Nov 6, 2008 at 3:39 PM
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MASTERTECHTIM
  • ✓Experienced Mechanic
  • 4,750 POSTS
most common causes are a faulty mass air flow sensor, a engine vacuum leak(look in engine compartment for a vacuum hose that has fallen off), or low fuel pressure.
Nov 6, 2008 at 9:43 PM
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