Aight I have my header install...

[Big J]

You should stop the problem, not reset it. I would check the sensor itself.

sensor is fine, cat is gone

[~The_Duke~]

sensor is fine, cat is gone

Well we had a slight issue extracting the old O2 sensor from the stock header. So the O2 sensor is brand new. I was going to try that code thing to see what code it was throwing. Cas I bet money that it is throwing a you dont have a O2 sensor code I havent looked at the list to see which one that one is. Cas I had run without an O2 sensor with that massive exhaust leak all the way to the dealer.

I asked a nissan tech at the dealership where I picked up the O2 sensor at if the light would turn off when the engine figured out it had an O2 sensor again and he said that they would have to hook it up to a computer (BS)

When doing the code checking thing, Will it automatically reset itself when I turn the ignition off?