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Error code P0AA6 526 613

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Ensol, Oct 1, 2015.

  1. Ensol

    Ensol Junior Member

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    2010 Prius
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    Hi fault code on my prius! Suggest its transaxle! Any suggestions? Can it be also hybrid battery?

    Thanks
     
    #1 Ensol, Oct 1, 2015
  2. bisco

    bisco cookie crumbler

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    how many miles on her? what are you using to read the code?
     
    #2 bisco, Oct 1, 2015
  3. Ensol

    Ensol Junior Member

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    image.jpg image.jpg image.jpg 160000 miles toyota techstream
     
    #3 Ensol, Oct 1, 2015
  4. jdcollins5

    jdcollins5 Senior Member

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    Location:
    Wilmington, NC
    Vehicle:
    2010 Prius
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    III
    From the 2010 DTC chart:

    P0AA6-526
    Hybrid Battery Voltage System Isolation Fault
    - Hybrid vehicle transaxle assembly
    - Generator cable
    - Motor cable
    - Inverter with converter assembly
    - Frame wire
    - No. 2 engine wire
    - Hybrid battery junction block assembly
    - Compressor with motor assembly
    - HV battery
    - Battery smart unit

    P0AA6-613
    Hybrid Battery Voltage System Isolation Fault
    - Hybrid vehicle transaxle assembly
    - Motor cable
    - Generator cable
    - Inverter with converter assembly

    The way I read this the P0AA6 is the basic Hybrid Battery Voltage System Isolation Fault. This indicates a Ground Fault on the HV Battery system. The 526 Sub Code lists all of the devices on the HV Battery System.

    The 613 Sub Codes seems to narrow this down to 4 possible devices, one of these being the Transaxle. You would need to test each of these circuits to determine which one has the Ground Fault.

    I could not find the Air Conditioner B1423 code but this could be indicating that the AC compressor motor could be the ground fault culprit.

    Once again you would have to do a process of elimination by isolating and testing each device to determine the source of the ground fault.
     
    #4 jdcollins5, Oct 1, 2015
    Last edited: Oct 2, 2015
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