Ok so my check engine light is on. (Whats new) and this time both codes came on at the same time p1521 and p0520 i understand one is the oil pressor sensor and the other is the wrong oil. I know i have the correct oil (5W-20) so the other code is tripping that one. Do i just replace the oil sensor? Is there a write up on here on how to locate and remove them? Im confused and fed up with this garbage car breaking every second.