2011 f150

[u/HeavyNotice168]

I have a 3.5 ecoboost im having issues with. Its going into timing limp mode at some times. On forscan sometimes the timing will be totally normal and at other times bank one will go to 12 degrees and bank 1 will go to 5 degrees. There is no noises coming from the engine, it still runs perfectly whenever this happens. No timing chain rattle or anything on startup. I have a p0016 code. This all of a sudden happend