The sensor is down on the left front of the engine by the oil filter. I attached a picture for you to view of the sensor location. you need a special socket to loosen the sensor. you can get it at the parts store.
As far as the low pressure, it could be the sensor but to be sure, I would check the pressure with a manual gauge to verify. if you have low pressure it could be an oil pump or clogged pick up screen in the oil pan. you can rent a tester at a parts store.
Image (Click to make bigger)
Wednesday, January 2nd, 2019 AT 11:17 AM