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Gen 2 Prius P3004 Code

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by PriusOwner352, Feb 27, 2023.

  1. PriusOwner352

    PriusOwner352 New Member

    Joined:
    Feb 27, 2023
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    Location:
    Tampa, FL, USA
    Vehicle:
    2008 Prius
    Model:
    ----USA----
    I changed 2 battery cells and upon installing the battery I got the P3004 code.

    Googling showed anything from inverted to fuse to faulty wire harness. Looked in Dr Prius App that block number 3 was low voltage.

    Inspected block 3 and sure enough one of the bus bar nuys was not tight enough.

    Problem solved!

    P.S. when replacing abad cell, make sure to attach the temp sensor wires. Otherwise you will get more codes!
     
    #1 PriusOwner352, Feb 27, 2023
    Tombukt2 likes this.
  2. dolj

    dolj Senior Member

    Joined:
    May 14, 2012
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    Location:
    Wellington, New Zealand
    Vehicle:
    2007 Prius
    Model:
    N/A
    I hope you tightened those bus bar nuts with a 1/4" torque wrench. They should be tightened to 48 INCH lbf. Both too tight and too loose are not good.
     
    #2 dolj, Feb 28, 2023
    Brian1954 likes this.
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