So I've had the car for a few weeks and have had zero problems... apart for when it wants to randomly turn off on me. Did it once at a red light on me while i was stopped.. so i replaced the battery, the terminals and the alternator read fine... and it did it on me again today after 5 days of it not... i was on the highway going around 80... thank god no one was behind me i literally started shaking, but i have absolutely no idea what the issue is , i got the codes read and because its cat-less thats the only code it threw. So im at a loss so any help would be amazing.

THANKS

 

Was it raining at the time it shut off? Mine used to do that but it was water leaking onto the BCM, located by the passenger door where your feet go.

 

Dumb question, but are you certain the car has gas or has fuel pressure? Its possible you may have a bad fuel level sensor which would cause the fuel gauge to read higher than it actually is or some fuel delivery issue (possibly the fuel pump is on its way out).
Its also possible the car is loosing a ground connection and cant complete a circuit for the electrical system.