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Help in S. California. Got a CEL P0A80 on 2005 Prius.

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by EkS, May 23, 2016.

  1. EkS

    EkS Junior Member

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    Hello! Well I was driving my 2005 Prius with 152k miles today, when I get 4 lights including the CEL and red triangle. I was able to scan with with the Torque program and got a code of P0A80 with no other codes. But I do have Techstream, and I'll be scanning with that in a few minutes. What exactly does the P0A80 mean? Should I start looking at replacing the hybrid battery?
     
    #1 EkS, May 23, 2016
  2. bisco

    bisco cookie crumbler

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    i think so. but you're barely out of warranty, i'd ask toyota for some help.
     
    #2 bisco, May 23, 2016
    S Keith likes this.
  3. EkS

    EkS Junior Member

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    Well looks like I also have a code P3000-123 aside from P0A80. I've attached the screenshots from Techstream. What am I looking at here? P0A80.jpg P3000-123.JPG
     
    #3 EkS, May 23, 2016
  4. jadziasman

    jadziasman Prius owner emeritus

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    There is a good chance that one of the two modules in block 8 has a dead cell in it. It's not a sure thing only because the overall
    state of charge of the entire battery is only 29.5% which is much lower than it should be.
     
    #4 jadziasman, May 23, 2016
  5. EkS

    EkS Junior Member

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    Anything I can do to determine the actual cause of the CEL?
     
    #5 EkS, May 23, 2016
  6. bisco

    bisco cookie crumbler

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    besides the fact that you have an 11 year old car with 152,000 miles?
     
    #6 bisco, May 23, 2016
  7. dolj

    dolj Senior Member

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    Why would you think the P0A80 and the P3000-123 would not be the cause?
     
    #7 dolj, May 24, 2016
  8. johnnyb588

    johnnyb588 Member

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    Block 8 was my suspicion as well. How familiar you are with this type of work, how much time you have, and how willing you are to troubleshoot (play whack-a-mole) will determine your best course of action moving forward (not to mention budget).
     
    #8 johnnyb588, May 24, 2016
  9. M in KC

    M in KC Active Member

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    First off credit to the OP for posting your issue with your codes retrieved from a creditable device! P0A80 is the terminal code for your HV battery. As time goes on I would expect to see d more of this code as the HV batteries are nearing the end of their design life span. Your options as I see them are the whack-a-mole approach and change only the cell(s) that have failed, purchase a rebuilt battery, purchase a used battery or purchase a new battery from Toyota. All of these options are a function of time, money and mechanical abilities.
     
    #9 M in KC, May 24, 2016
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