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2004 Aztec: where is bank 1 02 sensor located on this car?

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I NEED TO KNOW WHERE THIS SENSOR IS LOCATED SO I CAN REPLACE IT.

THANK YOU.

Vehicle: 2004 pontiac aztec/3400 engine

1 Answer

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Bank 1 Sensor 2 will on under the car after the catalytic converter 

see picture below

pontiac aztec bank 1 sensor 2 location

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