2016 Volvo problem

I had something similar happened to my 2012. My trucks symptoms were similar to yours and it was the EGR differential pressure sensor. No codes as well. You can remove the Venturi pipe and sensor and clean it out. Worth a try!

 

Try looking in your fuel tank, drivers side and see if you see air bubbles coming into the tank from the fuel return. if you do see air bubbles, it's time for injector cups. If it is time, I would replace injectors as well. Just had to do this to my 2013. I think its foolish to not replace the injectors, especially with mileage in 700's when replacing cups. Labor will be close to the same, if they have to open the valve cover back up to remove and replace injectors in the near future. Another possible culprit, not saying it is just that it could be, is your spigot or pilot bearing in your transmission. I would imagine the bearing, if that was the issue would get worse with time. So will injectors/cups. You still got good power climbing hills and pulling your loads?