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2006 Toyota Camry

Question: Where is H02s (B1 S1) located at?,code obtained was P0031

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soona99, 3.0L V6, Canada, KY, February 01, 2012, 17:20
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Code P0031 ,where is h02s (B1 s1) located at exactly? Do i access it from top of engine or below? I have prescribed to Alldata.com but still location is not clear? Do you have a real photo of sensor location? many thanks

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  • Answer #1

    mastertech6371 February 01, 2012, 19:04
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     Master

    from the top. it is the back head top sensor. it is a air/fuel ratio sensor and is pricy. you should have it confirmed with a real diag to be sure of the failure. a code never identifies a bad part, just a failed system.

    Roy

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    soona99, February 01, 2012, 20:43
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    Thanks Roy. I have checked A/F fuse , relay, any air leaks, faulty gas tank cap,etc but I was not able to check the A/F sensor connector and sensor itself using a Ohm/voltmeter because I could't tell its location. can you please be more precise of its location? because there are many sensors located in the back head.

    OBD2 report reads as follow : P0031 HO2S Heater Control Circuit Low (Bank 1, Sensor 1)

    Your quick feedback is highly appreciated because car is consuming fuel like hell!!!!!

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    mastertech6371, February 02, 2012, 06:29
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    it is the only sensor on the back exhaust manifold.

    Roy

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