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O2 sensor

(2001 Hyundai Elantra)
in Hammonton, NJ on March 26, 2009
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.
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Popular Answer
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.
on April 20, 2010
how do u change an o2 sensor before the catalit converter?
on March 26, 2009
This is the CAT monitoring sensor that is to the rear of the CAT converter.
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