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code P3011 ..

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by 48mpg, Feb 26, 2016.

  1. 48mpg

    48mpg Member

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    Location:
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    Vehicle:
    2005 Prius
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    I
    2005 with 171,000 miles
    The battery pack cooling fan is running all the time, red triangle check engine and ((!)) on the dash,yellow ((!)) PROBLEM then red ((!)) on the mfd display

    I see the code is for the first pair of modules but I have green bars on the display,MPG has not dropped the battery pack was rebuilt about 7 months ago where modules 2 others were replaced and the techstream print out showed all over 16 (almost 17) volts with the car on
    new 12 volt optima yellow top last month, shows 14 volts car on so I think the charging system is OK


    is this just another bad module or is there something more I should be worried about..
     
    #1 48mpg, Feb 26, 2016
  2. ericbecky

    ericbecky Hybrid Battery Hero

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    Code is for a bad vblock (pair of modules)
    Symptoms indicate a bad module.

    Was this a rebuild you did yourself?

    Answered my own question with some searching.
    Looks like a case of playing wack-a-mole.
    Was ~4 months since last teardown and module replacement.

    - February 2016. Bad module.
    - November 2015 bought modules off ebay (2 of them?). Installed by owner. vblock 9?
    - In 2014 had someone off craigslist redo it and replaced 2 modules. Guy did it in the driveway and guy who did it, his phone# is no longer in service
     
    #2 ericbecky, Feb 26, 2016
    Last edited by a moderator: Feb 26, 2016
  3. 48mpg

    48mpg Member

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    yes, I did it myself, if I remember right I replaced 17 & 18 last time
    Ill hook up the techstream and do a full test and update the codes if there are anymore, I had a hand held scanner in the car and checked it real fast and got P3011

    whats the lowest acceptable voltage on these mods before they trip the error code?
    I have 2 mods sitting here one at 7.34 and one at 7.48 ..think they are still good?
    pulling this thing in and out is becoming a pain
     
    #3 48mpg, Feb 26, 2016
    Last edited by a moderator: Feb 26, 2016
  4. ericbecky

    ericbecky Hybrid Battery Hero

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    Resting voltage can be deceiving.
    What do they look like under load?
    Here is kiwi's video that shows how sometimes the resting voltage hides the fact that the module is weak.
     
    #4 ericbecky, Feb 26, 2016
  5. 48mpg

    48mpg Member

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    thanks, even though the display is almost full of green bars the ICE runs constantly
    other codes were

    p3000
    p3011
    c1259
    b2775
    b1271 gateway
    Ill take the pack part again over the weekend
    like you said, wack-a-mole until I get it right

    thanks Ill take it apart again this weekend and try it again
    other code from teckstream were
    p3000
    p3011
    c1259
    b2775
    b1271
    I think they are all related to a weak mod
     
    #5 48mpg, Feb 26, 2016
    Last edited by a moderator: Feb 26, 2016
  6. ericbecky

    ericbecky Hybrid Battery Hero

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    48mpg,
    It's not that you aren't doing it right.

    It's just a case that if you fix the ones that are bad now, later other ones will become bad.
     
    #6 ericbecky, Feb 26, 2016
  7. 48mpg

    48mpg Member

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    true, i guess the pack will have issues due to the car sitting unused for a long time before I bought it, my other prius was a 2004 with 225,000 miles on the original battery and it was never opened..it was a daily driver its entire life...thanks for the help..
     
    #7 48mpg, Feb 27, 2016
  8. Ashish Dighe

    Ashish Dighe Junior Member

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    So what was the issue and how you resolved it?
     
    #8 Ashish Dighe, Jun 2, 2020
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