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

Red triangle but good mpg

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Dahvid, Aug 30, 2024 at 3:49 PM.

  1. Dahvid

    Dahvid New Member

    Joined:
    Today
    1
    0
    0
    Location:
    Usa
    Vehicle:
    2009 Prius
    Model:
    Touring
    Looking at buying a prius. Owner says mobile mechanic said cell 10 was low but still in range. They just took a roadtrip and still got over 40 mpg. It also won't start until codes are cleared; has red triangle

    I guess my questions are:

    Can you still get mpg like this with a bad cell?
    Could it be the 12v starter battery that's causing this?
    I'm more concerned it could be something else. Any thoughts?

    I hope that's enough information.
    Thanks for any and all input.
     
    #1 Dahvid, Aug 30, 2024 at 3:49 PM
  2. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    9,663
    1,688
    0
    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    More than likely you have the hybrid isolation fault this requires you to clear the code to generally drive the car starts and drives normally charges relatively normally gets pretty normal gas mileage and so on
     
    #2 Tombukt2, Aug 30, 2024 at 5:08 PM
  3. Brian1954

    Brian1954 Active Member

    Joined:
    Jan 31, 2021
    924
    350
    0
    Location:
    South Central PA, USA
    Vehicle:
    2011 Prius
    Model:
    III
    What are the trouble codes that are being cleared? List them, and you will get some answers about what the problem is with the car.

    PS, do not buy an old Prius unless you have experience fixing cars. Old hybrid cars can be very expensive to fix if you can not do the work yourself.
     
    #3 Brian1954, Aug 30, 2024 at 7:58 PM
(You must log in or sign up to post here.)