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2005 MFD Diagnostic screen

Discussion in 'Gen 2 Prius Technical Discussion' started by jefe, Sep 22, 2010.

  1. jefe

    jefe Member

    Joined:
    Sep 10, 2010
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    Location:
    Cary, NC
    Vehicle:
    2005 Prius
    Model:
    N/A
    I have a 2005 and the CEL keeps coming on. I've taken it in to my local mechanic and he tells me he got the code, reset the light and knows the problem. Something about a thermostat needing reprogramming or possibly replacing. Anyway, he said it was fine to drive and that I'd just need to bring it by sometime when it could cool off.

    My real question is, I thought I might be able to view/clear codes via the MFD but when i enter into diag. mode, the clear code button is grayed out. What gives?

    I have a cheap Geniscan G100 OBDII reader, but it doesn't seem to want to connect. It just says "Link..." but never displays a code or allows me to clear the code.
     
    #1 jefe, Sep 22, 2010
  2. jdenenberg

    jdenenberg EE Professor

    Joined:
    Nov 21, 2005
    3,873
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    Location:
    Trumbull, CT
    Vehicle:
    2020 Prius
    Model:
    LE AWD-e
    The Prius OBD2 system uses the CAN protocol and mant inexpensive code readers can not handle it. Many people like the ScanGuage (~$150) for use in a Prius.

    JeffD
     
    #2 jdenenberg, Sep 23, 2010
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