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P0A80 after "B" mode

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by pixiemag, Jul 30, 2024 at 11:59 PM.

  1. pixiemag

    pixiemag New Member

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    Location:
    Orange County, CA
    Vehicle:
    2012 Prius
    Model:
    II
    Recently a red triangle appeared on our car's dashboard - it happened after my husband used "B" mode for a short time. I checked codes using Car Scanner and that's what we got:

    P0A80
    Hybrid battery pack Deterioration

    P0517
    Battery temperature sensor - circuit high

    First thing we did was checking hybrid cooling fan if it's not dirty or clogged - it was pretty clean and it looks like it works well. After that, codes disappeared but after a few days P0A80 came back (this time none of us used "B" mode).

    A few months ago we replaced a battery for a refurbished one from a place that seemed to be a good one in our area. We replaced it because a red triangle appeared, and the mechanic told us we need to replace it. What's funny, it happened right after my husband used "B" mode.

    So yesterday I run a test using Dr Prius and it looks like we need a new battery soon (this time we're doing a new one). It looks like the battery doesn't have much capacity left (I did this test twice and got a very similar result), delta soc is high and block #1 is always the tallest on a diagram (I don't know if that even matters now).

    But I wonder, why both times when my husband used "B" mode for a very short time, we got battery issues? Do you have any idea if there's anything else that may causing battery issues and P0A80 code? Or is it's just weird coincidence that he used that mode twice, and each time red triangle appeared? I just want to avoid a situation when we buy a new battery, but next time one of us uses "B" mode, something happens to the battery again.
     

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    #1 pixiemag, Jul 30, 2024 at 11:59 PM
  2. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

    Joined:
    May 12, 2018
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    Location:
    Pennsylvania
    Vehicle:
    2018 Prius c
    Model:
    Two
    I think you just discovered the difference between 'seems good' and 'is good.'

    Weird coincidence. Lots of people need to use B mode frequently, especially in hills and mountains. If anything it is more gentle on the battery.
     
    #2 Leadfoot J. McCoalroller, Jul 31, 2024 at 2:24 AM
  3. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
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    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    I like most things when it's time to get a battery for your TV remote you go to the CVS and you get new duracells You don't put the old ones in the fridge or try to put them on a hobby charger or put them in the oven for a few minutes or or or or you get new ones because you want to be watching TV tonight probably pretty much same with your hybrid electric vehicle and by the time several people play with hobby chargers and all kinds of this kind of thing probably would have just been smart to get a new battery and be done with it and have your 8 to 10 years of well driving without issue for the most part or you do things like this every 2 years and pay 12 to 1,300. Funny thing is for 300 more dollars or so you could have had a brand new battery from Panasonic
     
    #3 Tombukt2, Jul 31, 2024 at 5:17 AM
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