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3rd Gen Prius Upstream O2 sensors

Discussion in 'Gen 3 Prius Technical Discussion' started by PriusMechanic, Sep 20, 2017.

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  1. PriusMechanic

    PriusMechanic Junior Member

    Joined:
    Sep 7, 2017
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    Location:
    CA
    Vehicle:
    2010 Prius
    Model:
    II
    I recent noticed that for the 3rd gen Priuses (Prii) depending on the year use different upstream O2 sensors (the one closest to the engine). From what I have seen

    Sensor number 234-9090 are in: 2010,2014,2015
    Sensor number 234-9112 are in 211,2012

    I am just wondering why is that? Are the 2 part interchangeable? Thanks.
     
    #1 PriusMechanic, Sep 20, 2017
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