P0AD915 Hybrid/EV Battery Positive Contactor Circuit Short to Auxiliary Battery.

Discussion in 'Gen 5 Prius Main Forum' started by Siyaar, Jul 13, 2025.

  1. Siyaar

    Siyaar New Member

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    Any Toyota Tech around who can help troubleshoot this? I'm willing to pay for the service. Looking for someone knowledgeable about the HV battery wiring diagram and HV ECU CAN.
    (Hybrid/EV Battery Positive Contactor Circuit Short to Auxiliary Battery.)
    Car won't go into ready mode, only shows ignition on.
    I've checked the fuses, HV battery grip, HV battery junction terminal box, and harnesses, but the error persists.
     
    #1 Siyaar, Jul 13, 2025
  2. Brian1954

    Brian1954 Senior Member

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    If your car is still under warranty, call your dealership.
     
    #2 Brian1954, Jul 13, 2025
  3. bisco

    bisco cookie crumbler

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    luscious garage. it has a new name, i'll try to remember. earthling automotive
     
    #3 bisco, Jul 13, 2025
  4. Gokhan

    Gokhan Senior Member

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    Probably not under warranty anymore.

    It is not something you can do. Take it to the dealer.

    HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for 2WD with NICKEL METAL HYDRIDE BATTERY): P0AD915; Hybrid/EV Battery Positive Contactor Circuit Short to Auxiliary Battery or Open; 2019 - 2020 MY RAV4 HV [11/2018 - 08/2020]
     
    #4 Gokhan, Jul 13, 2025
  5. Hammersmith

    Hammersmith Senior Member

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    Why wouldn't it be under warranty? User profile says 2023 XLE. No 2023 is more than 3 years old(first ones were delivered around Feb/Mar 2023). Plus it's part of the hybrid system, which might be 5yr, 8yr or 10yr.
     
    #5 Hammersmith, Jul 13, 2025
  6. Gokhan

    Gokhan Senior Member

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    Oh, I thought the warranty was two years. Definitely take it to the dealer then. This is a complicated, specialty repair.
     
    #6 Gokhan, Jul 13, 2025
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