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Low cell block voltage

Discussion in 'Gen 2 Prius Main Forum' started by Johnhersh, Apr 15, 2019.

  1. Johnhersh

    Johnhersh Junior Member

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    I just bought a Prius with some electrical problems. I hooked up TechStream and got a few different codes. P0A80 p3000 and poaa4 and poaa1.When I checked the cell voltage through TechStream it showed all blocks were around 15.9 volts except block 4 was around 7 volts. I was wondering if anyone on here has experienced similar symptoms or if anyone would have any advice. Doesn’t 7 volts seem really low for a block?Also the Prius won’t go in ready mode.
     
    #1 Johnhersh, Apr 15, 2019
  2. bisco

    bisco cookie crumbler

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    yes, probably why you're getting the P0A80
     
    #2 bisco, Apr 15, 2019
  3. 09Prius2

    09Prius2 Member

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    You obviously have a bad cell unless its just a bad connection / corrosion. Of course thats a big difference so it could fry the whole battery quickly if it were operated like that.
     
    #3 09Prius2, Apr 15, 2019
  4. Johnhersh

    Johnhersh Junior Member

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    So could it possibly be just a bad connection or corrosion?
     
    #4 Johnhersh, Apr 15, 2019
  5. bisco

    bisco cookie crumbler

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    maybe. you'd have to open the case and look. how is the 12v health?
     
    #5 bisco, Apr 17, 2019
  6. Johnhersh

    Johnhersh Junior Member

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    I figured it out.Opened up the case and one of the modules on block 4 was completely blown.I could actually lift the top up on the cell.Changed it out and everything works fine.However I still have a red triangle. I checked everything with Techstream and there are no codes.Will it sometimes take a bit for the red triangle to go out or is there still a problem?
     
    #6 Johnhersh, Apr 17, 2019
  7. bisco

    bisco cookie crumbler

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    tech stream should have a way to clear the codes, was the new module within parameters?

    can you make the car ready?
     
    #7 bisco, Apr 17, 2019
  8. Johnhersh

    Johnhersh Junior Member

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    Yes the Prius goes into ready mode and runs and drives fine.I have cleared all the codes and there are no more codes showing. But the red triangle is still on
     
    #8 Johnhersh, Apr 17, 2019
  9. bisco

    bisco cookie crumbler

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    doesn't ring a bell. idk the connection between the codes and lights. a cpu i assume? give it a few days and if it doesn't go out, try a new thread stating the problem
     
    #9 bisco, Apr 18, 2019
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