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CEL with P3021

Discussion in 'Gen 3 Prius Main Forum' started by zfk110, Jul 22, 2022.

  1. zfk110

    zfk110 Junior Member

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    2010 Prius 3rd Gen with 160K, Im getting P3021, but my OBD meter doesn't have any info about it, with online searching it's saying block 11 is weak, I took the picture of battery, someone kindly tell me which is the block 11 on it? I put the arrow on it, IDK if its the right block or not? becasue when Im reading the volt its showing me 7.4 on each cell
     

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    #1 zfk110, Jul 22, 2022
    Last edited: Jul 22, 2022
  2. bisco

    bisco cookie crumbler

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    are you testing under load? what code reader?
     
    #2 bisco, Jul 22, 2022
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  3. zfk110

    zfk110 Junior Member

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    I was just driving around then CEL came up. when I put the reader INNOVA 5610 it shows me that code
     
    #3 zfk110, Jul 22, 2022
  4. bisco

    bisco cookie crumbler

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    when you test the module or block voltage, it has to be under load so you can see the actual voltage the car sees when you're driving
     
    #4 bisco, Jul 23, 2022
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  5. zfk110

    zfk110 Junior Member

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    How I can do the load test on these? also how I can find the block location? That what I was trying to find out
     
    #5 zfk110, Aug 1, 2022
  6. bisco

    bisco cookie crumbler

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    tech stream can do a load test, possibly dr. prius app. or you can find procedure for individual modules in the rebuilding threads, as well as module block numbering.
     
    #6 bisco, Aug 1, 2022
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