o2 sensor on 2001 Hyundai Elantra

I have a code that reads bank 1 sensor 2 which o2 sensor is this the one on exhaust manifod or after the convertor? their like 85 dollars i don't want to buy both of them thanks.

by in Hammonton, NJ on March 26, 2009
3 answers
ANSWER by on March 26, 2009
It is the Oxygen Sensor that is screwed into the exhaust pipe just past the catalytic converter. Sensor 2 means the downstream O2 sensor, post converter.
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ANSWER by on March 26, 2009
This is the CAT monitoring sensor that is to the rear of the CAT converter.
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ANSWER by on April 20, 2010
how do u change an o2 sensor before the catalit converter?
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