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Bank one ?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Randy Chunn, Sep 13, 2019.

  1. Randy Chunn

    Randy Chunn New Member

    Joined:
    Sep 13, 2019
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    Location:
    Mississippi
    Vehicle:
    2006 Prius
    Model:
    LE
    My mechanic run a 2 hour test on this 2006 Prius and came the with conclusion it has an issue with bank one, however voltage is 7.8 and above on all 28 cells, when first starting the car the pack shows 238 volts then after a few minutes it drops to 214 volts, hence then goes into limp mode, any help at this point would be great, I thank you in advance
     
    #1 Randy Chunn, Sep 13, 2019
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    welcome!

    are you going to diy, or give your mechanic advice?
     
    #2 bisco, Sep 13, 2019
  3. dolj

    dolj Senior Member

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    Location:
    Wellington, New Zealand
    Vehicle:
    2007 Prius
    Model:
    N/A
    If your HV battery is 238 V (80% SoC) and then drops to 214 V (40% SoC) in a matter of minutes, I'd say your HV battery has seen better days. You also don't say what load is on the battery in those few minutes, any idea?

    Your best plan of attack may be to work out the best way (for you) to replace all modules with brand new ones.
     
    #3 dolj, Sep 14, 2019
  4. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    Location:
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    Vehicle:
    2006 Prius
    Model:
    Three
    Voltage is one piece of a larger puzzle for battery module health. Capacity is the real key with internal resistance being secondary. Voltage follows.
     
    #4 2k1Toaster, Sep 14, 2019
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