I own a 2016 WRX and I was wondering if anyone can help me out. 3 codes come up on my access port and they are: P000C, P0020, P0021. I recently brought my car to the dealership to get an oil change and oil was spilled on what I believe to be a camshaft sensor. It's right below the oil cap in the front of the engine on the right side if you are looking at the engine. The car runs rough on start and when I drive and throw it into neutral it will stall out at times. I'm trying to save myself money so if anyone can help me out it will be greatly appreciated!