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P0171

Discussion in 'Gen 2 Prius Technical Discussion' started by Cometflash, Jun 5, 2021.

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  1. Prius RT

    Prius RT Member

    Joined:
    Apr 27, 2022
    112
    11
    0
    Location:
    89147
    Vehicle:
    2007 Prius
    Model:
    Two
    Well, I don't have p0171 any longer. Driven for 150 miles. Car drives smooth. Mpg is 45mpg 2-3mpg better after I replaced CAT. Valve cover gasket was replaced 6 months ago. As expected of high mileage Prius I top off oil (1 quart) between oil changes. There are no visible oil leaks.
    The bolt of the part below the maf was loose (maybe when I went there to replace MAF..bcoz i got p0171 right after). That's what the mechanic said and I think that was why I was getting p0171
     
    #41 Prius RT, Aug 13, 2023
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