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.
ANSWER by on March 26, 2009
This is the CAT monitoring sensor that is to the rear of the CAT converter.
ANSWER by on April 20, 2010
how do u change an o2 sensor before the catalit converter?
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