V4 2.0L .. where is the sensor? l do not know where?
Dont know where that converter is either.. LOL , also, its V4 2.0L

4 cylinder or V6? there should be one before and one after the Catalitic converter. on the V6 there will be 2 before and 1 after.

If you can get under your car, look where the exhaust comes off the engine at the bottom of the motor. On the exhaust pipe you should see what resembles(kind/sorta) a spark plug that is screwed in to this pipe with a small wire attached to it. If you have a v-6 there will be 2 of them 1 on each pipe. this is your O2 sensor, they are relatively easy to replace.

sensor is right in front on te exhaust manifold - open hood -look down 1 wire coming from it

There is one on the exhaust header and one before C/Converter Will take a special wrench to get the ones on the converter, hope this helps.