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P0A80 not HV Battery

Discussion in 'Gen 2 Prius Main Forum' started by WinstonY, Apr 10, 2017.

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  1. WinstonY

    WinstonY New Member

    Joined:
    Apr 10, 2017
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    Location:
    Hawaii
    Vehicle:
    2006 Prius
    Model:
    Two
    2006 with 78K miles, new Optima 12V battery and clean battery fan.
    I have installed 3 Dorman batteries, returning each one after getting a DTC P0A80 right after installation and test drive. I took it to the Toyota dealer and they signed off on a battery failure on battery #2.
    The P0A80 is usually accompanied with another DTC. I have gotten: P3021 and P3011.
    After 3 replacement HV batteries, I don't think it is a HV battery problem.

    I have replaced the HV battery on 2 other Priuses with no problems so I don't think it is my installation technique (but if could be).

    I think it might be a Hybrid ECU problem or a bad connection/wire somewhere.
    I am stumped and would appreciate any ideas on diagnosing this problem Prius.
     
    #1 WinstonY, Apr 10, 2017
    Bmmotors likes this.
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