2012 Freightliner sprinter

Hello I just Bough a 2012 Freigthliner sprinter and I am having some problems with it.
I drove the Sprinter untill it showed the Low Fueld Ligth then I filled the tank and now the sprinter has no power. It will go to abouth 20 miles per hour and lose power it will still run but very slow and it sems like it has no power.
If anybody has any ideas on what cold it be I will apriciate it. Max

First let me extend to you a hale and hearty welcome to the forum.

Have you changed the air filter recently? If yes, definitely check the hose/connections right off the air filer box down to the turbo inlet. An air leak there can cause the symptoms you describe.

If that connection looses integrity the computer(s) notices the difference in air flow expected from the MAF and the other sensors/calculated air mass values. That makes the computer unhappy.

Even if you haven't mucked around there it is worth checking. The hose clamp has some history of not being properly tightened.

Good luck. vic