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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
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    mike31635

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    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?
     
    mike31635, Jan 17, 2016
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  2. Jan 17, 2016 at 5:04 PM
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    mdavis

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    mdavis I need a beer.

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    Welcome to the site! @LOTSOFTOYS will be able to help you.
     
    mdavis, Jan 17, 2016
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  3. Jan 17, 2016 at 5:28 PM
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    Wynnded

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    Wynnded What MPG...

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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.
     
    Wynnded, Jan 17, 2016
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    Black Wolf likes this.
  4. Jan 17, 2016 at 5:50 PM
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    LOTSOFTOYS

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    LOTSOFTOYS Toyota Whisperer

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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.
     
    LOTSOFTOYS, Jan 17, 2016
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    Wynnded[QUOTED] likes this.
  5. Jan 17, 2016 at 7:55 PM
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    Black Wolf

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    Black Wolf Chillin' in Alamosa

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    Black Wolf, Jan 17, 2016
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    Wynnded likes this.
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