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Too many codes and slurping fuel!


New Member
Dec 17, 2021
Truck Year
I was driving home yesterday from my property 4 hours away. I can get to and from there on a normal drive with about a half tank of fuel left. Yesterday driving home I noticed that it was sucking fuel down like no other, I was at about a quarter tank left with a hour left. I was passing someone on a colorado pass when I noticed a sudden loss of power, then about 15 seconds later it went into limp mode, flashing the check throttle position sensor or something, blowing white smoke and had no turbo. Thankfully I was at the top of the pass and was able to coast it down to a gas station. I got the code p0299 I believe, the turbo underboost.
I shut it off and retuned it back to stock (I have the mr tuning tune)to see if that would work. Thank goodness I fired it up and it ran again. Now I have lots of codes showing up
I have no idea where to begin. I am mechanically inclined and always fixed my vehicles myself but again I am at a loss of where to start.
Could the excessive fuel consumption be that my dpf is clogged? Or is it more likely a sensor or wiring issue? The BlueDriver is saying it’s doing a regen every 20 miles/30 mins


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New Member
Sep 9, 2023
Truck Year
Were you able to figure anything out ? When is the last time you change the battery? I would think you would have to be a very and wiring issue to loose communication with all of those modules. Also are you able to see the pressure difference between the inlet and outlet Nox sensor ?