I have a 96 and the check engine light is on and it says bank 1 sensor 2 is bad. Well I got the numbers reversed and changed bank 2 sensor 1. So I took the plug that I pulled out of bank 2 sensor 1 because it was still good, and put it in bank 1 sensor 2.. and it didn't fix my problem and the check engine light is still on. My question is... Are the front sensors and back sensors different? Or are the sensors on one side different from the others?? I appreciate any help I can get, I am pretty new to the game.