2011 Hyundai Sonata limited 2.4L p0011 problem has stumped my mechanic

Posting this for my bro bc he doesnt have reddit--

After I got the timing done and the ocv sensors replaced on the car it popped a code for the ocv sensor on the exhaust side. Once it was replaced the intake side threw a code so it was replaced as well. After that it has been the p0011 code constantly. I got new vvt sprockets and ocv sensors from the Hyundai dealership then replaced the ones I got from rockauto with them.

Still threw the code so my mechanic took the valve cover off and loosened the bolts on the sprockets so he could turn them the opposite direction because they were rotating too far.

Going Tuesday to the dealership and getting another vvt sprocket to replace the side that Is throwing the code. Can anything else cause this code? Any other ideas about how to fix this?