Strange p0014 issue

[Aldo0280]

I just purchased a 2011 nox with 2.4 ecotec & its got a p0014 code. I tested the exhaust camshaft solenoid & it tested good so i put some seafoam in the oil & drove it hard a bit then changed the oil & filter. I still keep getting the p0014 code & when watching the cmp live data i can see the exhaust cmp angle was stuck at 0 but i decided to take it for a drive & see what happens. After about 20 min of driving i noticed the exhaust cmp angle started to match the desired angle so i pulled over & cleared the p0014 code thinking all was good & when i started it back up the cmp angle was stuck at 0 again? So i went back home & tried to command the cmp angle to change which didnt work at first but after messing with it for a while i got it to move form 0 to 20 & back to 0 again but everytime i turn off the car it goes back to being stuck at 0? I had already purchased a new vvt solenoid & while testing the resistance for the 3rd time it was showing 14ohms which isnt off by much but i decided to put the new solenoid in & im still having same issue? I was pretty sure the problem was going to be the exhaust vvt sprocket but after seeing that the exhaust cmp angle will match the desired angle im not so sure now? Basically everything works fine until i shut the engine off then when i restart it the cmp angle is stuck at 0 again & i usually have to use my scan tool to command it to move before it starts working again? Anyone have any ideas as to what could be going on? The car has 214,000 miles on it & i have no idea about any of the previous maintenance. The oil was about a quart to quart & a half low when i got it? Srry for long post just wasnt sure what details matter & what didnt so i tried to write everything i did. Thank u in advance for any help/advice!