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:
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    2010 Prius
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    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?
     
  2. bisco

    bisco cookie crumbler

    Joined:
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    it does happen once in awhile. tell them to disconnect the 12v neg for a minute