007CobaltLS

Ok, here's the deal...I just started getting this code. I cleared it, it came back.

I installed my header, DP, and cat-back all at once, ran for a while with a code due to he header. I have now had a Trifecta Tune for about a year.

I can't remember if this is the same code I originally had or not, but I know Vince deleted the code I had before.

Does anyone know for sure if this is the same code you get when you aren't tuned and have a header? What would cause this to all of a sudden come back or come on?

Do I need a new sensor or what?

On a different note (I don't think it's related anyway)...my exhaust must have a leak or one of the header to DP bolts might be loose again. Could this affect it?

Thanks.