2014 Prius Plug In Fuel Tank Sensor Issue

I noticed the rush of air coming from my gas tank and trouble pumping gas into the tank with repeated shut offs at the pump. Ran obt 2 scan and got the code P1453/ Fuel tank Pressure Sensor High Input. I searched on YouTube and google on how to access the Fuel tank pressure sensor so I could check the voltage and the sensor itself. There were no videos or pictures on how to gain access to the pressure sensor. I read it’s located under the back seat and possibly underneath the car. Any help or advice would be appreciated !