B2799-539 Code

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by TwoPriusInTenn, Oct 1, 2025 at 10:33 PM.

  1. TwoPriusInTenn

    TwoPriusInTenn Member

    Joined:
    Nov 27, 2015
    243
    65
    0
    Location:
    Tennessee
    Vehicle:
    2004 Prius
    Model:
    Base
    I replaced the HV ECU in my daughter's 2008. We have done the 4 and 13 jumper wire trick, but still the engine will not start. Next step suggestions welcomed.
     
    #1 TwoPriusInTenn, Oct 1, 2025 at 10:33 PM
  2. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    12,694
    2,268
    0
    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    spins but no start? Is it sposed to be starting running?
     
    #2 Tombukt2, Oct 2, 2025 at 7:03 AM
  3. Brian1954

    Brian1954 Senior Member

    Joined:
    Jan 31, 2021
    2,015
    786
    0
    Location:
    South Central PA, USA
    Vehicle:
    2011 Prius
    Model:
    III
    Is this the same car that you created a thread about on September 6th?
    https://priuschat.com/index.php?posts/3563003
     
    #3 Brian1954, Oct 2, 2025 at 9:14 AM
    Last edited: Oct 2, 2025 at 9:29 AM
  4. TwoPriusInTenn

    TwoPriusInTenn Member

    Joined:
    Nov 27, 2015
    243
    65
    0
    Location:
    Tennessee
    Vehicle:
    2004 Prius
    Model:
    Base
    #4 TwoPriusInTenn, Oct 2, 2025 at 4:05 PM
  5. saneesh8

    saneesh8 Member

    Joined:
    Jul 5, 2024
    165
    40
    0
    Location:
    Allen, TX
    Vehicle:
    2009 Prius
    Model:
    One
    #5 saneesh8, Oct 2, 2025 at 5:04 PM
(You must log in or sign up to post here.)