2000 Dodge Neon

There should only be two o2 sensors on the car. One before the cat and one after. The one you want to change is the one after the cat convertor. Theres only one you cant mess up. The banks have no meaning when you are under the car. Just look for the o2 sensor in the exhaust pipe and change it. You will need a special socket for the sensor available at any parts store. Hope this helps! MORT