OBD2 bluetooth scanner caused Check Engine light and Check Hybrid System fault message?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by milksheikh, Jun 22, 2025 at 12:49 PM.

  1. milksheikh

    milksheikh Future Prius Owner (hopefully)

    Joined:
    Jan 22, 2012
    11
    4
    2
    Location:
    Brooklyn, NY
    Vehicle:
    2010 Prius
    Model:
    II
    I'm shopping for a used Prius to replace our 2010 which was in a collision recently. I looked at a used 2010 with 220k miles yesterday, and used the Car Scanner iOS app and a Panlong OBD2 bluetooth scanner module to read diagnostics. This gave P0A80 and P3000 hybrid battery codes, so I then ran Dr Prius battery testing which gave a 48% capacity reading (needs replacing soon).

    The owner messaged me today to say he now has a Check Engine light and the Check Hybrid System fault system. Did my reading codes (or exercising the battery) trigger this, or is it just timing coincidence?
     
    #1 milksheikh, Jun 22, 2025 at 12:49 PM
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    112,184
    51,040
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    it does happen once in awhile. tell them to disconnect the 12v neg for a minute
     
    #2 bisco, Jun 22, 2025 at 1:27 PM
  3. Brian1954

    Brian1954 Senior Member

    Joined:
    Jan 31, 2021
    1,715
    669
    0
    Location:
    South Central PA, USA
    Vehicle:
    2011 Prius
    Model:
    III
    Using your scanner did not create the warning light or message. Your "exercising the battery" may have lend to the messages being displayed. The hybrid battery in that car has issues. Stay very far away from that car.
     
    #3 Brian1954, Jun 22, 2025 at 5:17 PM
(You must log in or sign up to post here.)