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Q: o2 sensors on 2006 Toyota Tundra

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
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
(2) Comments
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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