Hi group,
I've been getting a check engine light come on for a while, I have cleared it a few times but it keeps coming back after a few hundred miles.
The truck only has 190k miles on it, it still runs the same as when I got it.
The truck still is getting around 17 to 18 MPG the same as when I got, and still has plenty of power.
The Ford DIAGNOSTIC CODES said it could be one of these Faulty EP sensor, VGT control valve slow to respond, Stuck VGT valve, faulty PCM.
Which one do you think I should try first.

Thanks,

 

Welcome to the site..

P0299 is almost always the turbo VGT unison ring sticking/hanging in the turbo housing causing the actuator or VGT movement delay due to carbon and rust/corrosion. Occasionally the ring can crack, but most often not.
Removing the turbo, separating the housings and inspecting for wear, then de-carbonizing the cases (ring contact/wear areas), vanes, ring, and carefully removing the corrosion from the ID/OD of where the ring rotates for better clearance is done. The addition of high temp anti seize is generally applied to the ring/housing and reassembled. The job is generally about 3-4.0 hours. You'd also need the turbo mounting seal kit. Nothing for the turbo itself, just the mounting items..
There's a lot of info/vids on the net to R&R the turbo,, or I can help you with some material if you like if its a task you want to do yourself....