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P0A80 with no change in SOC

Discussion in 'Gen 3 Prius Technical Discussion' started by Lesk_The_Glut, Jan 12, 2024.

  1. Lesk_The_Glut

    Lesk_The_Glut Junior Member

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    Hey all,
    My 1012 Prius developed a P0A80 code some months back. After playing whack-a-mole a few times with my older Prius' modules years ago, I decided to purchase the NexPower lithium pack for this one.
    After driving it a few months in this condition, I'm finally getting around to installing the new pack, but have noticed a potential secondary issue: the SOC appears to be always at 6 bars. The "check hybrid system" dialog is always on display, but every time I hit the display button to bring up the SOC, it's always the same: 6 bars, no more, no less.
    As I understand it, a failing pack causes the SOC to swing wildly. Is a constant SOC indicative of another undiagnosed issue?
     
    #1 Lesk_The_Glut, Jan 12, 2024
    Last edited: Jan 12, 2024
  2. ChapmanF

    ChapmanF Senior Member

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    If you still have time to edit your thread title to change the "PA080" to the correct P0A80, more people may be likely to find your thread. (One quick check that a trouble code has been spelled right: the second character is never anything but 0, 1, 2, or 3.)

    It may be pretty common to see SoC swinging around on a tired old battery, but that's not exactly what the ECU is looking for to make the P0A80 judgment, so it probably doesn't need to be overthought.
     
    #2 ChapmanF, Jan 12, 2024
    Lesk_The_Glut likes this.
  3. Lesk_The_Glut

    Lesk_The_Glut Junior Member

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    OOPS! Thank you!
     
    #3 Lesk_The_Glut, Jan 12, 2024
  4. bisco

    bisco cookie crumbler

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    what button do you press to see the state of charge, isn't it always on the dash?
     
    #4 bisco, Jan 12, 2024
  5. blackhat

    blackhat New Member

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    i have the similar issue on 2012 camry
    i checked with obd app and it shows the small "aux battery voltage as -24" and also the HV battery "chg ctrl -24kW"
    and it also shows
    "battery block number with max voltage: Latest value 1" (but flickers from 1 to 17 )
    "battery block number with min voltage : Latest value 10 " (steady)

    i checked the battery with multimeter and it shows around 12v

    anyone have any idea what might be the issue ?
     
    #5 blackhat, Jan 12, 2024
    Last edited: Jan 12, 2024
  6. Brian1954

    Brian1954 Active Member

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    #6 Brian1954, Jan 12, 2024
  7. Lesk_The_Glut

    Lesk_The_Glut Junior Member

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    Bisco, because I'm driving it while it's throwing the code, the "check hybrid system" dialog is obscuring the SOC. So I need to hit the display button on the steerimg wheel to see my normal display info
    In a few seconds, it reverts to the trouble dialog. So, I can't really see changes in real time (though clearing the code would get me by for a while). But SOC never changes from 6 bars when I do check it.
     
    #7 Lesk_The_Glut, Jan 12, 2024
  8. Lesk_The_Glut

    Lesk_The_Glut Junior Member

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    Brian, it's got about 227k miles on it. I'd been expecting a traction battery failure, as my 2006 Prius ran into this issue at about 185k.
     
    #8 Lesk_The_Glut, Jan 12, 2024
  9. Brian1954

    Brian1954 Active Member

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    Sounds like it is time to install the lithium battery that you purchased.
     
    #9 Brian1954, Jan 12, 2024
  10. Lesk_The_Glut

    Lesk_The_Glut Junior Member

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    You're right, but I'm hella lazy. Think of all the extra miles I've gotten. :ROFLMAO:
     
    #10 Lesk_The_Glut, Jan 12, 2024
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