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2005 traction light issues

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Priusflipper, Mar 2, 2016.

  1. Priusflipper

    Priusflipper Junior Member

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    Hi guys, i have a 2005 prius, just replaced the HV battery and 12v. But not have 3 codes coming on..

    I added a photo of the lights currently on
    -U0123 "Lost communication with yaw rate sensor module"
    -U0124 "Lost communication with lateral acceleration sensor module"
    -U0126 "Lost communication with steering angle sensor module"

    Not too sure where to start i've located the yaw rate sensor and was going to replace but wanted to see what you guys had to say first. ANY help is very appreciated.

    BTW: It seems to run and drive fine.

    Thanks, Tyler
     

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    #1 Priusflipper, Mar 2, 2016
    Last edited: Mar 2, 2016
  2. valde3

    valde3 Senior Member

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    Have you tried to clear the codes? All of those sound like possible caused by bad 12V.
     
    #2 valde3, Mar 2, 2016
  3. Priusflipper

    Priusflipper Junior Member

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    Tried to clear and nothing happened. Disconnected the 12v and nothing, its reading 12v though.
     
    #3 Priusflipper, Mar 3, 2016
  4. bisco

    bisco cookie crumbler

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    welcome! maybe 12v isn't enough. a new battery should read 13v at rest. alternatively, some codes need to be reset by a reader.
     
    #4 bisco, Mar 3, 2016
  5. dolj

    dolj Senior Member

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    Like Bisco says, the ABS (and probably VSC) related DTCs will not be reset by disconnecting the 12 V battery. These can only be cleared by using an appropriate code reader.
     
    #5 dolj, Mar 4, 2016
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  6. bisco

    bisco cookie crumbler

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    thanks! i wasn't sure about that.
     
    #6 bisco, Mar 4, 2016
  7. Priusflipper

    Priusflipper Junior Member

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    I have a Bosch scam tool and have tried a few times and still nothing..
     
    #7 Priusflipper, Mar 6, 2016
  8. bisco

    bisco cookie crumbler

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    you might need a prius aware tool, all scam tools are not created equal.:cool:
     
    #8 bisco, Mar 6, 2016
  9. Priusflipper

    Priusflipper Junior Member

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    Haha okay thank you! Any idea where i can find one of them? Thanks
     
    #9 Priusflipper, Mar 6, 2016
  10. bisco

    bisco cookie crumbler

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    the only one i know of that does it all is the mini vci. there are many threads here on them, it's the official toyota tech stream software. you need an old laptop. it's possible some other scan gauge will work, but i'm not sure.
     
    #10 bisco, Mar 6, 2016
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  11. Priusflipper

    Priusflipper Junior Member

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    okay great thank you Bisco.
     
    #11 Priusflipper, Mar 6, 2016
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  12. bisco

    bisco cookie crumbler

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    all the best.(y)
     
    #12 bisco, Mar 6, 2016
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