1. Attachments are working again! Check out this thread for more details and to report any other bugs.

VSC light, (!) light and Red Triangle of Death; P3000 code

Discussion in 'Gen 2 Prius Main Forum' started by 2007priuslol, Jun 27, 2021.

  1. 2007priuslol

    2007priuslol New Member

    Joined:
    Apr 15, 2021
    8
    0
    0
    Location:
    UK
    Vehicle:
    2007 Prius
    Model:
    Four
    I have a problem with my 2007 T4 prius. I have already changed the Hybrid Battery ECU and I have tested all the battery cells' voltage, which are all the same or very close. The oil on the car is at good level, I have changed it and the filter + Transmission fluid, the coolant is at ok level aswell. When I turn on the car at morning, the lights on the dashboard are off, but when I have driven the car for about 30 minutes, meaning it is warm, the lights on the dash turn on, this happens everytime, after 5 hours of driving, when I floor the car, it has a later response to acceleration, which wasn't like before when you would accelerate the car. I have cleaned the connectors on the battery, I think that the problem is not the battery. Can someone recommend something to do to solve the problem?
    I have attached a image to show the dashboard on my prius.
     

    Attached Files:

    #1 2007priuslol, Jun 27, 2021
  2. 2007priuslol

    2007priuslol New Member

    Joined:
    Apr 15, 2021
    8
    0
    0
    Location:
    UK
    Vehicle:
    2007 Prius
    Model:
    Four
    can you guys respond please
     
    #2 2007priuslol, Jul 1, 2021
  3. dolj

    dolj Senior Member

    Joined:
    May 14, 2012
    7,648
    3,859
    0
    Location:
    Wellington, New Zealand
    Vehicle:
    2007 Prius
    Model:
    N/A
    Unfortunately, that image helps very little. You need to get the codes read and then report the codes here. Make sure that the code reader you use can read all of the 11-14+ ECUs as well otherwise you will not get the full picture. With the codes, we could then give you a steer on where to focus your attention.
     
    #3 dolj, Jul 1, 2021
    2007priuslol and SFO like this.
  4. 2007priuslol

    2007priuslol New Member

    Joined:
    Apr 15, 2021
    8
    0
    0
    Location:
    UK
    Vehicle:
    2007 Prius
    Model:
    Four
    The only code that I have on my car is the P300 code but I have changed the battery ECU and it didn't help
     
    #4 2007priuslol, Jul 2, 2021
  5. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    23,956
    15,569
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    The P3000 code logged by the HV ECU means that the HV ECU has received reports that there are codes in the Battery ECU.

    That means the important thing to do next is post what the trouble codes are in the Battery ECU. If the scan tool you are using shows you the P3000 but doesn't show you what Battery ECU codes are responsible for it, then a scan with a better tool is needed.

    Some people do look at the P3000 code's fortune cookie (something like "battery control system malfunction") and go straight to replacing the battery ECU, but what the code really means is usually that the battery ECU did its job and reported some issue. Replacing the battery ECU for that is usually a case of shooting the messenger.
     
    #5 ChapmanF, Jul 2, 2021
  6. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    7,035
    2,788
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    People can't tell you what they don't KNOW.

    AND.....posting exactly the same thing again 3 days later is bad form.
    Rude and won't help.

    If you don't hear what you want to hear, will you be posting it yet a third time in another day or two ???
     
    #6 sam spade 2, Jul 2, 2021
  7. 2007priuslol

    2007priuslol New Member

    Joined:
    Apr 15, 2021
    8
    0
    0
    Location:
    UK
    Vehicle:
    2007 Prius
    Model:
    Four
    I didn't mean to post it i typed it in as a joke
     
    #7 2007priuslol, Jul 2, 2021
(You must log in or sign up to post here.)