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2005 Prius PA093

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Marten Benatar, Sep 6, 2021.

  1. Marten Benatar

    Marten Benatar Junior Member

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    Location:
    Northern California
    Vehicle:
    2005 Prius
    Model:
    Four Touring
    I have an OBDII reader and go the code PAO93. I installed a new inverter coolant pump. When my wife excelerates up a hill she gets that error code. I have bled the system. Checked the reservoir to make sure the pump is working. All seems to working properly. But when she is up
    In the foothills and accelerates up a steep incline the error light comes on. Any ideas?
     
    #1 Marten Benatar, Sep 6, 2021
  2. PriusCamper

    PriusCamper Senior Member

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    Vehicle:
    2007 Prius
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    Two
    You sure there's motion in the reservoir? Because that error code indicates there's not? Is the coolant level high enough?
     
    #2 PriusCamper, Sep 7, 2021
  3. ChapmanF

    ChapmanF Senior Member

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    Also, if you search for the code correctly spelled — P0A93 (the round thing is a zero, not a letter O, and note the order) — you might get a lot more search results that will tell you useful things.
     
    #3 ChapmanF, Sep 7, 2021
  4. TMR-JWAP

    TMR-JWAP Senior Member

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    Don't forget, the P0A93 has 2 subcodes, One that says the pump circuit is the likely problem area and one that says the fan circuit is the likely problem area.

    And, as mentioned just a post or two earlier, there's a ton of info in the forum. Sometimes it's not a pump or fan issue, but a clogging issue or air pocket issue.
     
    #4 TMR-JWAP, Sep 7, 2021
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