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Toyota Prius 2012 Need some help

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Rocco Gaglioti, Apr 19, 2022.

  1. Rocco Gaglioti

    Rocco Gaglioti Junior Member

    Joined:
    Apr 18, 2022
    6
    2
    3
    Location:
    Orlando
    Vehicle:
    2012 Prius
    Model:
    III
    0F557F9C-2E20-4726-A23A-BDDBF9F7FF39.png C0AB1366-CDC8-43F7-A54A-1AB4702E3203.png 87CE3B09-E17A-4836-AD6A-757ED9B2E812.png Hello everyone. I get these error codes and I replaced all bus bars and replaced module 1 & 2 and still get these error codes. I am 100% lost. I have no idea why my battery pack is not picking up module 1. I could use any help and feed back. Thank you
     
    #1 Rocco Gaglioti, Apr 19, 2022
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    have you checked all the wiring and connector pins for corrosion?
     
    #2 bisco, Apr 19, 2022
    Rocco Gaglioti likes this.
  3. Rocco Gaglioti

    Rocco Gaglioti Junior Member

    Joined:
    Apr 18, 2022
    6
    2
    3
    Location:
    Orlando
    Vehicle:
    2012 Prius
    Model:
    III
    When I took off the wiring harness I took a tooth brush and cleaned each post. Do you think I need to change the fuse board or computer on the battery?
     
    #3 Rocco Gaglioti, Apr 19, 2022
  4. PriusCamper

    PriusCamper Senior Member

    Joined:
    Mar 3, 2012
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    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    Block one likely has a bad voltage sensor wire where it plugs into the Battery ECU...
     
    #4 PriusCamper, Apr 19, 2022
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  5. PriusCamper

    PriusCamper Senior Member

    Joined:
    Mar 3, 2012
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    Location:
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    Vehicle:
    2007 Prius
    Model:
    Two
    Pull the Battery ECU and open it and look inside and see how close to the board the corroded connecting pin got.
     
    #5 PriusCamper, Apr 20, 2022
    Rocco Gaglioti likes this.
  6. Rocco Gaglioti

    Rocco Gaglioti Junior Member

    Joined:
    Apr 18, 2022
    6
    2
    3
    Location:
    Orlando
    Vehicle:
    2012 Prius
    Model:
    III
    Yes I did and there was no corrosion at all.
     
    #6 Rocco Gaglioti, Apr 21, 2022
    bisco likes this.
  7. Rocco Gaglioti

    Rocco Gaglioti Junior Member

    Joined:
    Apr 18, 2022
    6
    2
    3
    Location:
    Orlando
    Vehicle:
    2012 Prius
    Model:
    III
    C72D0B4C-50F4-4605-8E28-A894A0F3DEB4.jpeg I found the issue. I just ordered a new one from eBay. I will install it and I think all will be good now. Thank you for your help
     
    #7 Rocco Gaglioti, Apr 21, 2022
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