1995 Nissan Sentra No spark

I replaced the timing chain and put back together out of time. The car ran but was noisy after warm up. I fixed the timing and now have no spark. I have tried a different distributor and a new crank angle sensor. My code reader gives a code for cam position sensor a circuit. Bank 1 or single sensor the code is p0340. I also repaired the wire on the knock sensor. Any help would be appreciated.