whats the problem with a P0171 reading OBD2

Asked by May 10, 2017 at 02:33 PM about the 2005 Ford F-250 Super Duty Lariat Crew Cab LB

Question type: Maintenance & Repair

engine light came on!

2 Answers

76,715

Probably a bad O2 sensor. http://repairpal.com/obd-ii-code-p0171

254,375

https://www.yourmechanic.com/article/p0171-obd-ii-trouble-code- system-too-lean-bank-1-by-andrew-quinn

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