I keep getting a code 2 on my PW0 OBD0 b16a setup in my 1991 integra, I know for sure its plugged up and i also get the bogging or hesitation when cruising. I've also switch the wires so many times and still the same. Even when i switch the wires it's still code 2 after resetting the ecu, why is it always code 2 and not code 1 for primary oxygen sensor if i switched them? is something wrong here? Well, I ordered a new oxygen sensor that should be coming in a few days so I'm hoping that works. Are there any other things i should look into also if that doesn't fix it?