you'll need some penetrate (i prefer zep45) an open end wrench. disconnect the wires and try to break the sensor free if it wont budge you can use a torch to heat up the surrounding area and then try again.
It has two. They must be replaced, not cleaned.
Depending on which sensor, IS it sensor 1 or 2
where is the oxygen sensor in a 2004 astro van
Where is the o2 sensor on an o4 hyundai sonota 4cyl bank1 sensor2
The 2004 Dodge Intrepid oxygen sensor can be found on the back of the air cleaner housing. Remove the wiring harness. Remove the oxygen sensor retaining screws. Reverse the process to install the new oxygen sensor.
How to remove and change an alternator in 2004 Ion
You need to take a wrench to loosen the oxygen sensor, then you will need to disconnect the cord. Once you have done that you will then pull out the old oxygen sensor.
Check out the related video on how to change the rear brakes on a Saturn.
Bank 2 is on the passenger side of the vehicle. Sensor 2 is down stream ( behind ) the catalytic converter. Second sensor from the manifold. May have 4 sensors.
By breathen inn
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For the 2.2 liter, there are two. One is a pre catalytic converter sensor, and the other is post catalytic converter. They are very easy to access and replace.