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Good traction battery please help

Discussion in 'Gen 2 Prius Main Forum' started by PhilipC2189, Mar 28, 2018.

  1. PhilipC2189

    PhilipC2189 New Member

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    hello everyone i have been working on this 2nd gen prius for about a month now and i keep getting the same resaults.

    codes are p0a80 and c1241

    i have watched the youtube videos and bought the meters to check each cell ever cell is reading 7.8 volts. but continue to get the same codes. just bought and installed a new 12 volt battery same symptoms. any help would be appreciated thank you
     
    #1 PhilipC2189, Mar 28, 2018
  2. dolj

    dolj Senior Member

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    You need to load test each module.

    Follow the basic load test procedures here:

    Prolong® Battery Module Load Tester User Guide | Hybrid Automotive

    You can build your own testing harness easily enough, but they sell them as a turnkey solution for people that can't/ don't want to build their own. Post your results and let us know if you have any other questions.
     
    #2 dolj, Mar 28, 2018
    Raytheeagle likes this.
  3. PhilipC2189

    PhilipC2189 New Member

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    [​IMG]
    this is the results after load testing. and now it is acting weird the red triangle went off for about 2 days of driving i put about 200+ miles on it without it coming back on. so i went out and started it this morning and the battery showed all green bars then when i backed out of the driveway the triangle came on and now i got a c1310 code i opened the traction to check the conections and everything is tight, clean and connected properly.
     
    #3 PhilipC2189, Mar 31, 2018
  4. Hybrid Battery Exchange

    Hybrid Battery Exchange Member

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    1.1v drop with only a 2 minute load test? Ditch #1 module, it's obviously bad.
     
    #4 Hybrid Battery Exchange, Apr 4, 2018
  5. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    +1. I'd redo the measurements on that one and another just in case. It was presumably the first you measured and is waaaaaay out of line of the others. If it truly is over a full volt out of whack, it needs to go. You have a fairly decent spread of voltage there, you may be able to eek out a while longer with a single module replacement. Definitely not anywhere near the worst pack voltages I've seen.
     
    #5 2k1Toaster, Apr 4, 2018
  6. PhilipC2189

    PhilipC2189 New Member

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    thank you all for your reply's i have rechecked the voltage after letting the battery sit without being connected to each other and the #1 cell dropped all the way to 2.56 v and #2 dropped to 5.8 v so i replaced them and the problem went away no more codes. i guess sometimes you just have to let it be for a while longer before you start working on it. also the rest of the cells are at 7.68 range
     
    #6 PhilipC2189, Apr 4, 2018
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