Inverter repair

Discussion in 'Generation 1 Prius Discussion' started by lapp, Oct 17, 2025 at 10:56 AM.

  1. lapp

    lapp Junior Member

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    Mar 2, 2006
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    I have three inverters, two that throw P3125 code 325 and one that throws code P3125 307. No other codes are present. Does anyone know what parts i might swap from one inverter to another to get one working inverter?. Code 307 says something about current sensing, would the current sensors from the error code 325 inverters be something that can fix the 307 error code inverter?.
    Yes, the coolant pump is still working.
    Apologies if this post is covered elsewhere but i could not find anything about actually repairing a faulty inverter.
    Thanks for any advice!
     
  2. ChapmanF

    ChapmanF Senior Member

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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    307 has the fortune cookie "abnormal current value of motor" (i.e. MG2). Swapping the MG2 current sensor (if that turns out practical to do) might improve that, but it might also be the case that the sensor is ok and the measured current was abnormal for some other reason, so it sounds kind of like a "try it and see".