Thanks mang.This part is attached to the fuel tank, but you don't have to drop the tank or anything to get to it. The fuel tank is under the second row seats, and this part is attached to the side of the fuel tank that faces towards the rear of the car. You can get to it by crawling under the car near the left rear wheel and looking up.
I attached a photo - the rear of the car is toward the bottom of the picture. The fuel tank is just out of the frame at the top of the photo. For reference, the larger black tube on the left of the photo is the fuel filler and it runs back to the fuel door. The part you want to replace is the U-shaped black tube that runs from the top center of the photo, through the white clip, and then bends around and attaches to the tube on the right side of the photo. The pressure sensor is the bit right in the middle of the photo with the wires attached - there's no way to replace this by itself, you have to buy the whole tube assembly and replace it.