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2006 Toyota Tundra Question: o2 sensors

 

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wbazydlo, 4.0L V6, Fayetteville, GA, August 10, 2010, 06:52
 Rookie

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?

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, August 10, 2010, 15:20
     Master

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

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    wbazydlo, August 10, 2010, 20:21
     Rookie

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

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    Bret Bodas, August 10, 2010, 21:30
     Master

    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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