Hello I did some looking in the forums for my problem and I could exactly find an answer.

As the title suggests I have the p1273 code. I wanted to get opinions on the possible issues. I have berk res test pipes, aftermarket intake, Megan headers, and full Tomei cutback exhaust.
The p1273 code could be due to an exhaust leak i already know about (Already ordered parts gonna fix asap)

What are other options that could be the cause of the issue?

Also I have been going through a lot of oil over the past 3 weeks.
Today and about 2 weeks ago I have been having an overheating issue that goes away after I start driving.

Any and all help is appreciated, thank you.