Help with 2004 Volkswagen Jetta

Question

I just bought this car and it lacks power and idles very rough and throws 3 codes are all of the codes together mean something pointing to the right problem

Answer 1

P0016 Crankshaft to Camshaft position correlation

P0134 02 Sensor circuit no activity Bank 1 Sensor 1

P0302 Misfire number 3 cylinder

Before going any further check the condition of the timing belt, and the timing mark for the T-belt