Camshaft Sensor Position problem or Oil Related problem

I have a 2014 VW Jetta SE. Recently my engine began making an off and on Growling noise while driving around. At the same time, my engine light came on. Took the car to get checked and the reading came back stating that the Camshaft Position Sensor needed replacing. Part will take about 7 – 10 days to get in so I’ve been driving around as sparingly as possible. Today (the day the part is to come in) while doing an errand, my oil light flashed red. Took the car to a parts store and purchased 2 bottles of oil. Emptied one bottle into the oil tank, turned the car on and while the car made an initial growl, that noise did not happen again on my drive back to work. Any thoughts or suggestions would be helpful.