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P2195 07 Prius stalls at highways speeds

Discussion in 'Gen 2 Prius Main Forum' started by Frankusa94, Aug 24, 2024 at 9:45 AM.

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  1. Frankusa94

    Frankusa94 New Member

    Joined:
    Jul 4, 2024
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    Location:
    Ny
    Vehicle:
    2007 Prius
    Model:
    N/A
    My 07 after 3-5 miles of driving at 60mph+ …will suddenly starts blowing black smoke out tail pipe, mpg drops to 15mpg, stops charging hv battery and gradually rolls to a stop as battery becomes depleted. Powering the car off for a 2 minutes allows the car to restart and run normally…I do need to wait a few minutes for hv battery to charge up… then car drives fine the rest of the trip. Throws codes p2195 “ Bank 1 sensor stuck lean” car runs fine under 60mph. Aftermarket Upstream O2 sensor is 3 months old. anyone have any thoughts on this issue?
    Thanks
    Frank
     
    #1 Frankusa94, Aug 24, 2024 at 9:45 AM
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    109,293
    49,692
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    my only thought is an ecu issue, but i have no idea really. i can't understand why turning it off an on fixes it, except for the resetting of an ecu.
     
    #2 bisco, Aug 24, 2024 at 4:30 PM
  3. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

    Joined:
    May 12, 2018
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    Location:
    Pennsylvania
    Vehicle:
    2018 Prius c
    Model:
    Two
    What do the fuel trims look like?
     
    #3 Leadfoot J. McCoalroller, Aug 24, 2024 at 5:00 PM
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