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CEL Trac off light

Discussion in 'Technical Chat' started by ssp4q6, Dec 19, 2016.

  1. Dec 19, 2016 at 3:18 PM
    #1
    ssp4q6

    #1
    ssp4q6 [OP] New Member

    Joined:
    Dec 19, 2016
    Member:
    #205243
    Messages:
    1
    Gender:
    Male
    First Name:
    Shane
    Vehicle:
    2012 tacoma 4x4 2.7L
    As I was driving home both CEL and trac off light came on together. I did a little research and found it could be the gas cap. I figured I would try the easiest. I filled up and ensured the cap was tightened and reset the code. (I have a friend with a pricey diagnostic tool) The light came on again. We ran the check and got a P0138 B1S2 code. O2 sensor after the cat converter. I said ok...that is easy enough to replace so I bought a new Bosch 02 sensor for B1S2 and installed it. We reset the code and I drove for about 100 miles and both lights came back on today on my way home from work. I won't be able to run the diagnostic again until tomorrow.

    Any ideas on what it could be would be a great help!!!

    Thanks
    Shane
     
    ssp4q6, Dec 19, 2016
    #1

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