I just changed the timing belt on my sisters car and finished yesterday and drove it today. A check engine light came on so I went to check it out and P0016 popped up. I've done some research and people say that it might be that the timing belt is misaligned or loose. I tightened the belt not too tight but not too loose. Note: I also spilled coolant on the crankshaft pulley and a bit on the belt itself. The car idles rough when driving too. Any help is appreciated. I will tomorrow take off the cover and check the tension of the belt.