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

2nd Gen Prius OBD2 Port Not Communicating

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Retsukowind, May 30, 2022.

  1. Retsukowind

    Retsukowind Junior Member

    Joined:
    Oct 16, 2019
    12
    3
    0
    Location:
    United States
    Vehicle:
    2006 Prius
    Model:
    Limited
    my OBD2 port on my 2006 Toyota Prius works partially but when I connect my elm327 obd2 device, it doesn't connect to the Bluetooth elm reader that connects the reader to my phone. I used to be able to read my Prius with any code scanner and look at the high voltage batteries. Now I can't access anything to the check engine light or batteries. How hard would this be to fix or try correcting?
     
  2. PriusCamper

    PriusCamper Senior Member

    Joined:
    Mar 3, 2012
    11,096
    4,516
    0
    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
  3. mr_guy_mann

    mr_guy_mann Senior Member

    Joined:
    Sep 3, 2020
    3,465
    1,505
    0
    Location:
    NJ-USA
    Vehicle:
    2006 Prius
    Model:
    Four
    Could be a problem with your adapter, could be a problem with the female terminals in the OBD connector (you would need a single male terminal of the correct size to check fit when pushed in- there should be slight but noticeable drag when pulling).

    Does that OBD adapter work on another car?

    Posted via the PriusChat mobile app.
     
  4. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    9,119
    1,580
    0
    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    I've noticed similar problems in my gen too and those code readers I tend not to use sometimes if I unplug them and reinsert them they seem like they work but I don't know how deep they go I have text stream on a cf-19 with a dongle that seems to work it's red and it lights up green and red is data moves I don't know how to buy another one to get an extra as the j standard for these things seems to be all over the place the replacement or the piece that I got with the Toyota tech stream computer I bought from the dealer I believe this is a replacement cable but it works
     
  5. Retsukowind

    Retsukowind Junior Member

    Joined:
    Oct 16, 2019
    12
    3
    0
    Location:
    United States
    Vehicle:
    2006 Prius
    Model:
    Limited
    The same code reader used to read my codes on my car for the last two years, now all of a sudden even AutoZone and oreillys AND Toyota's code readers do not read the car even though the ECU logs codes in, and I cannot ream them now.
     
  6. dolj

    dolj Senior Member

    Joined:
    May 14, 2012
    7,651
    3,862
    0
    Location:
    Wellington, New Zealand
    Vehicle:
    2007 Prius
    Model:
    N/A
    The wiring diagram shows a 7.5A OBD fuse (in the driver's side interior fuse block?) specifically for the OBD2 connector. Have you checked that fuse with an ohmmeter?
     
    #6 dolj, Jun 2, 2022
    Last edited: Jun 2, 2022
  7. Retsukowind

    Retsukowind Junior Member

    Joined:
    Oct 16, 2019
    12
    3
    0
    Location:
    United States
    Vehicle:
    2006 Prius
    Model:
    Limited
    I did check all of the fuses and none of them are blown. Still puzzled
     
  8. LDT08

    LDT08 Junior Member

    Joined:
    Dec 18, 2018
    16
    4
    0
    Location:
    Florida
    Vehicle:
    2008 Prius
    Model:
    Two
    Did you figure this out?