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C342D code

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by pbui, Sep 6, 2014.

  1. pbui

    pbui Member

    Joined:
    Dec 9, 2009
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    Location:
    Los Gatos, northern CA
    Vehicle:
    2004 Prius
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    N/A
    hi folks,

    My 2004 Prius at 230Kmiles is throwing a number of codes:

    p1116, p1121 - stack valve stuff
    p0420 - AirFuel sensor, replaced rear O2 sensor but didn't help

    C342D - this one is mysterious to me, "C" denotes chassis I believe.

    does any one know of code c342d ?

    thanks
     
    #1 pbui, Sep 6, 2014
  2. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Green Valley, AZ
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    2015 Prius
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    Two
    That is not a valid Prius DTC.

    You'll need to replace the catalytic converter to address P0420.
     
    #2 Patrick Wong, Sep 6, 2014
  3. pbui

    pbui Member

    Joined:
    Dec 9, 2009
    190
    13
    1
    Location:
    Los Gatos, northern CA
    Vehicle:
    2004 Prius
    Model:
    N/A
    PW - You meant C342D code ? yeah, weird. May be it's my cheapy OBD-II reader. Anyway, I was afraid to learn of the Cat. Is it worth tryin to replace the AF sensor first ? I am in CA so the Cat probably will be pricey. Also I've heard these hybrids will be subjected to smog inspection starting in 2015.

    The dreaded oil burn is probably killing the cat.
     
    #3 pbui, Sep 8, 2014
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