Where is thottle valve actuator located on a 2014 sprinter

What are the system fault codes?

Look under the chassis and locate where the heater and a/c hoses enter the car. That will give you the general location of the evaporator and air ducts. You will need to remove the plastic side covers to locate the actuators.

That sounds like a low or dying battery. What is your battery voltage?

check for blown turbo hoses and hole in the air exchange radiator

2014 van?? Where's your drivers handbook??

that is a bad idle air control valve. it is located on the thottle body next to the thottle position sensor

Its on the side of the thottle body, two 10mm bolts hold it on, its cylinder shape and will have bright metal on the ends of it, with a wiring harness plugged in on one side, if you locate the air cleaner follow the black intake tube up to the engine, the black tube hooks onto the thottle body, then on the side should be the idle air control valve.

p2106 Throttle actuator control system-Forced limited power.

the tp sensor/s in your thottle body is the problem. the most common repair is to replace the thottle body, some people just replace the tp sensors.

It also can be a broken wire to the injector.

it is located beside the thottle body, but this code is insufficient flow, which the port in your thottle body is stopped up with carbon, you will have to remove the thottle body , take some carb cleaner and a pick and clean the port out.

The reprogramming preformed is due to a fault in the EGR valve causing faulty actuation. The actuation of the valve prevents soot acumulation in the valve. excessive soot build up could cause the valve to stick. the reprogramming preformed is to prevent this... as for the whine.. I dont think this would be a result of the reprogram.. best of luck