P0453 stands for “Evaporative Emission System Pressure Sensor/Switch High

Considering I rebuilt the fuel system under the tank, checked the canister valve, replaced the purge valve, and have a new gas cap that means there has to be a leak somewhere when the system is put under vacuum. This is the same code that I eventually figured out I was having hesitation issues as listed in this thread:
https://www.crossfireforum.org/forum...eleration.html

Now the car drives great with no hesitations.

I might replace the hose that goes from the purge valve to the hard line that runs under the car.