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P0031 bank 1, sensor 1

Discussion in '1st Gen Tundras (2000-2006)' started by mike31635, Jan 17, 2016.

  1. Jan 17, 2016 at 5:02 PM
    #1
    mike31635

    mike31635 [OP] New Member

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    New to the forum.......I have an 03 Toyota tundra,V8...Gives me a code of P0031.says that the bank 1 sensor 1 is bad. Which sensor is this,is it the one on the exhaust manifold or the one before the converter?
     
  2. Jan 17, 2016 at 5:04 PM
    #2
    mdavis

    mdavis Tiger Life

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    Michael
    Rock Hill, SC
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    Welcome to the site! @LOTSOFTOYS will be able to help you.
     
    Bob likes this.
  3. Jan 17, 2016 at 5:28 PM
    #3
    Wynnded

    Wynnded Wait, what?

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    Please indulge me, I'm going to guess for the sake of my own entertainment. Driver's side closest to the engine. Here's my logic. Driver's side is Left side, we read from Left to Right thus Bank 1. Sensor closest to the engine is the upstream sensor, the one that sees the exhaust stream first thus Sensor 1. Thank you for your patience, we'll see what the professional says. Thanks.
     
    matluth likes this.
  4. Jan 17, 2016 at 5:50 PM
    #4
    LOTSOFTOYS

    LOTSOFTOYS New Member

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    Not bad logic at all man! Hahaha but different manufacturers delegate their wn engines bank on different sides... just so happens bank 1 on a Toyota V8 is drivers side.
     
    Wynnded likes this.
  5. Jan 17, 2016 at 7:55 PM
    #5
    matluth

    matluth Fish On!

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    18"X9" FN BFD's rims, 295/70R/18E Cooper Discoverer STT Pro's, upgraded to Old Man EMU coil-overs/shocks. Toytec shackles Next: true dual exhaust, new UCA's.
    upload_2016-1-17_20-55-7.jpg
     
    Wynnded likes this.
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