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Prius 2012 Inverter DC Error Code P0A94

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Rabbera, Oct 11, 2016.

  1. Rabbera

    Rabbera New Member

    Joined:
    Oct 11, 2016
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    Location:
    Pakistan
    Vehicle:
    2012 Prius
    Model:
    N/A
    I am newbie here.
    (first of all Pardon my English skills)
    I own a 3rd Gen Prius 2012 Japanese version
    I am 2nd owner of the car and imported this last year from Japan with the mileage of 80K.
    I do all maintenance regularly and enjoying the drive too,
    After owning car for about 22 months couple of days ago suddenly car had a warning message of "Stop the car in a safe place and check hybrid system" in addition to this warning light of Check Engine+Brakes + Traction Control +Yellow Triangle.
    Car was in driving condition with gasoline engine.
    I took it to the Toyota Workshop .
    Techstream Displayed the code P0A94.
    Mechanic removed the fuse of HV Batteries.
    Removed the grip from Inverter for sometime and re fixed that.
    Checked all the fuses,
    Changed the 12 volt battery too
    Tried to clear code while driving the car.
    In the end he said now the error code be cleared after installing new Inverter Unit (Cost around 1000 US $)
    My Question to experts is one is he saying right.Or there can be any other solution to that as well.
    And 2nd question after installing new Inverter unit the cause to get fault will not be found so how to find that.
     
    #1 Rabbera, Oct 11, 2016
    Bakan likes this.
  2. mrbigh

    mrbigh Prius Absolutum Dominium

    Joined:
    Sep 6, 2005
    3,686
    699
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    Location:
    Long Island, NY
    Vehicle:
    Other Electric Vehicle
    You are facing the now common " Power Inverter failure".
    There is a parts Kit for this repair.
    In the USA and Canada this type of repair is covered by manufacturer's warranty.
    You should check locally to see if the vehicle will be cover for this infamous failure.
     
    #2 mrbigh, Oct 11, 2016
  3. Abbas

    Abbas New Member

    Joined:
    Nov 7, 2016
    2
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    Location:
    Karachi, Pakistan
    Vehicle:
    2012 Prius
    Model:
    Three
    Dear Brother (Rabbera),
    I am facing exactly the same problem as you.. for last couple of days.
    Did you find any solution?
    Please respond.. I contacted Mr. Faisal an electrician at Khan Motors Karachi, he is suggesting a solution to replace the Sensor Battery Voltage 89892 - 47020 .. *(Photo Attached.)

    Regards,
    Abbas
    0333-5165802
     

    Attached Files:

    #3 Abbas, Nov 7, 2016
  4. Abbas

    Abbas New Member

    Joined:
    Nov 7, 2016
    2
    1
    0
    Location:
    Karachi, Pakistan
    Vehicle:
    2012 Prius
    Model:
    Three
    In my Prius we have found that one of the Boost Coverter Diode is burned out.. The fault was discovered after opening all the the circuits of Power Inverter.
     

    Attached Files:

    #4 Abbas, Nov 8, 2016
    bisco likes this.
  5. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    108,034
    49,112
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    welcome! congrats on discovering the problem. that may have been a recall situation here, i'm not sure.
     
    #5 bisco, Nov 8, 2016
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