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EV Battery Volt Sense harness

Discussion in 'Gen 2 Prius Main Forum' started by Ao1234, Oct 26, 2024.

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  1. Ao1234

    Ao1234 New Member

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    2008 Prius
    Model:
    Base
    Hello
    New here
    Have a 2008 Prius
    Bought cheap

    death triangle on dash I knew of

    anyway
    Pulled traction battery and found my Voltage sense harness plug was burnt on 2-3 pins
    CPU also had 2 pins missing.

    question …..

    I’m thinking that would cause enough bad info to trigger the Warning along with the
    Low volt/ AF and P0A80 code in the car..????

    make sense??
    Also can these be repaired by electronic shop or new/used parts needed


    Thankyou

    Andy
     
    #1 Ao1234, Oct 26, 2024
  2. Tombukt2

    Tombukt2 Senior Member

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    I'm imagining you could probably find an electronic shop that could repair the pins in the ECU in question but the hour labor rate would be more than junk parts would cost you at a junkyard these cars are 20 years old now so the parts aren't really at a big premium anymore That's the reality of it You can find cars and people's side yards and get parts for near nothing or you have no time for that and you're at the mercy of some shop or whatever no that's another whole ball game.
     
    #2 Tombukt2, Oct 27, 2024
  3. Brian1954

    Brian1954 Senior Member

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    III
    Yes, corrosion on the wire harness and HV battery ECU pins can cause a P0A80 trouble code.

    Buy a new voltage sensing wire harness from a Toyota dealership. Purchase a used HV battery ECU on eBay. Install both and see if it fixes the problem.
     
    #3 Brian1954, Oct 27, 2024
    Last edited: Oct 27, 2024
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