Dreaded p0420 code.

Discussion in 'Gen 2 Prius Technical Discussion' started by priusmanneedhelp, Nov 7, 2021.

  1. priusmanneedhelp

    priusmanneedhelp Junior Member

    Joined:
    Oct 11, 2020
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    Location:
    Arizona
    Vehicle:
    2005 Prius
    Model:
    ----USA----
    Car scanner app shows that the catalyst monitor bank 1 has failed. What are my options? Is it time for a new catalytic converter?
     

    Attached Files:

    #1 priusmanneedhelp, Nov 7, 2021
  2. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    11,557
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    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    Haven't tried this yet on a Prius I want to just gut the cat knock the brick out put it back up look everything up drive it see how crazy it goes or not My Corollas didn't mind it

    SM-A715F ?
     
    #2 Tombukt2, Nov 7, 2021
  3. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    sell it for big bucks and buy a cheap aftermarket
     
    #3 bisco, Nov 7, 2021
    SFO likes this.
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