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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2001 Hyundai Elantra Question: o2 sensor
Answer #1hemicuda March 26, 2009, 14:17Master
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 #2dandd March 26, 2009, 14:19Master
This is the CAT monitoring sensor that is to the rear of the CAT converter.
Visitor, April 20, 2010, 20:06
how do u change an o2 sensor before the catalit converter?