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2006 Toyota Tundra Question: o2 sensors



wbazydlo, 4.0L V6, Fayetteville, GA, August 10, 2010, 09:52

emissions code pop up Poo37
bank 1 sensor 2
replaced it with a bosch
check engine light pops up right away
changed the sensor after the cat - towards back of truck
any help?

1 Answer
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  • Answer #1

    August 10, 2010, 18:20

    Are you getting power to the oxygen sensor heater?\ terminal on the sensor?

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    wbazydlo, August 10, 2010, 23:21

    don't know
    how would I test it?
    thanks a lot !!!!

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    Bret Bodas, August 11, 2010, 00:30

    Get a wiring diagram and a voltmeter, find the wire that provides power to the sensor heater and check for 12 volts when the engine is running.
    Find a manual with wiring diagram here: http://bit.ly/mitchell_repair_manuals_online
    As I always say, diagnose first, then replace. You may have wasted money on a sensor when it was a blown fuse or a loose connection.
    Good luck.

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