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Codes U0100 and P3000

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Paul Brannan, May 12, 2014.

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  1. Martinsanr

    Martinsanr Junior Member

    Joined:
    Aug 22, 2020
    4
    1
    0
    Location:
    San Diego
    Vehicle:
    2007 Prius
    Model:
    Four
    Same Issue. Prius run out of gas. Usually when prius run out of gas it throws a code about this issue, the only codes found were P3000 & U0100. Tank filled, cleared codes disconnecting 12V battery for about 5 minutes. But motor did not start. After hours of troubleshooting the culprit was the EFI fuse. Attached are photos of the location of EFI fuse and the blown fuse. WhatsApp Image 2023-09-05 at 9.32.17 AM(1).jpeg WhatsApp Image 2023-09-05 at 9.32.17 AM.jpeg WhatsApp Image 2023-09-05 at 9.32.03 AM.jpeg n fuse founded.
     
    #21 Martinsanr, Sep 5, 2023
  2. dolj

    dolj Senior Member

    Joined:
    May 14, 2012
    7,855
    3,967
    0
    Location:
    Wellington, New Zealand
    Vehicle:
    2007 Prius
    Model:
    N/A
    What caused the EFI fuse to blow?
     
    #22 dolj, Sep 6, 2023
  3. Martinsanr

    Martinsanr Junior Member

    Joined:
    Aug 22, 2020
    4
    1
    0
    Location:
    San Diego
    Vehicle:
    2007 Prius
    Model:
    Four
    My hypothesis is, since the car run out of gas and trying to start the car without gas, the fuel pump overheat and needs more current or some component in the electonic fuel injection (EFI) demands more current. I think that is the cause. just guessing. Fuse was replaced with a good one, refilled the tank and now the prius has been on the road since.
     
    #23 Martinsanr, Sep 7, 2023
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