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Throwing codes 171 and 172 02 sensor wire?

Discussion in 'GM Electrical Tech' started by Ryan07, Feb 6, 2013.

  1. Ryan07

    Ryan07 New Member

    I just got done rebuilding my 5.3 out of the 2007 Trailblazer. Now I've got it all put back together and I've got codes 171 and 172 and that is all I have, I think its the cord to my 02 Sensor wire for bank one. Can it be anything else? I did notice that it looked like the wire got squished not the connector but just the wire itself that is on the harness not the sensor.

    Its 171 which is bank one lean
    and 172 bank one rich

    Thanks for the help!
    Last edited: Feb 6, 2013

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