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05 Prius With Codes

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Hank Williams, Jun 17, 2020.

  1. Hank Williams

    Hank Williams New Member

    Joined:
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    Location:
    Jacobsville Md
    Vehicle:
    2005 Prius
    Model:
    ----USA----
    The dealer say I need a new ECU in the battery and a new cell and a sensor . The fan is too loud in the back. here are the codes. I had the car in the garage for 9 days while I was in ocean city on vacation. My 12V Was 12.89 When I Tested It.
    P3000 - HV Battery Control System Malfunction

    P3024 - Battery Block 14 Becomes Weak

    P0A7F - Hybrid Battery Pack Deterioration

    P0A80 - Replace Hybrid Battery Pack

    P0AFA - Hybrid Battery System Voltage Low

    P0A1F - Battery Energy Control Module

    P0AC1 - Hybrid Battery Pack Current Sensor 'A' Circuit Low

    C1259 - HV System Regenerative Malfunction

    C1310 - Malfunction In HV System

    B1424 - Solar Sensor Circuit Driver Side

    U0293 - Lost Communication With Hybrid Vehicle ECU
     
    #1 Hank Williams, Jun 17, 2020
    Last edited: Jun 17, 2020
  2. Hank Williams

    Hank Williams New Member

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    Location:
    Jacobsville Md
    Vehicle:
    2005 Prius
    Model:
    ----USA----
    F66AF54A-1B6E-4E05-9A64-EDE3EFAE4943.png CCD6AAF3-D18F-470D-88BF-22E262AB47C3.png I was using my my mini van for ocean city! The battery is fully charged. Which I never seen before until yesterday.
     
    #2 Hank Williams, Jun 17, 2020
  3. PriusCamper

    PriusCamper Senior Member

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    Location:
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    Vehicle:
    2007 Prius
    Model:
    Two
    I've seen this problem more than once... The corrosion connecting the modules is bad, so bad that the corrosion is also on the voltage sensing wires where they plug into the hybrid battery ECU, which eventually shorts out the ECU.

    While most dealers charge $5K to fix... Myself and other charge $500 to 1) replace w/used battery ECU ($50), 2) Replace voltage sensor harness aka: Wire Frame No2 ($50) 3) Replace bus bars and nuts with new or clean, 4) full diagnostics on all 28 modules, which includes 3 increasingly deeper discharges and recharge aka: reconditioning. 5) replace bad modules.
     
    #3 PriusCamper, Jun 17, 2020
    edthefox5 likes this.
  4. bisco

    bisco cookie crumbler

    Joined:
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    that sounds a bit high for the 12v, how old is it?

    how many miles on your car?
     
    #4 bisco, Jun 17, 2020
  5. Hank Williams

    Hank Williams New Member

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    Location:
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    Vehicle:
    2005 Prius
    Model:
    ----USA----
    150K 12V Is 15 Years Old

    Would a use battery Be better Then a new
     
    #5 Hank Williams, Jun 17, 2020
    Last edited by a moderator: Jun 17, 2020
  6. PriusCamper

    PriusCamper Senior Member

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    Two
    If you're rich and you have plenty of money than yes a brand new pack is the way to go... But if wasting money hurts you... Then no...

    But more to the point, if your 12v battery is really that old (I'm skeptical) that's the first thing to deal with and might solve all you problems...
     
    #6 PriusCamper, Jun 18, 2020
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  7. bisco

    bisco cookie crumbler

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    Plug-in Base
    how did you get the 12v reading of 12.89?
     
    #7 bisco, Jun 18, 2020
  8. PriusCamper

    PriusCamper Senior Member

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    Two
    Here's the best way to test your 12v battery:

     
    #8 PriusCamper, Jun 18, 2020
    bisco likes this.
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