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Code P0171 on 2001 Toyota Tundra

Tiny
THATSMYDAWG1
  • MEMBER
  • 2001 TOYOTA TUNDRA
  • 17,800 MILES
2001 toyota tundra v8 4.7l 178,000 got a code p0171 running lean and o2 sensor heater element. I cleaned maf and briefly checked for vacuum leaks. Fuel filter has not been changed in 110,000 where do I start to find whats causing lean running I am thinking fuel filter.I need help
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Monday, September 10th, 2012 AT 6:46 PM

2 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Start by changing the fuel filter.
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Monday, September 10th, 2012 AT 6:55 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
What is your actual fuel pressure and how did you check for a vacuum leak?
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Monday, September 10th, 2012 AT 6:56 PM

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