SouthernBuck217

i have a 2013 f150 fx4 with the 3.5 ecoboost. the problem started a week ago when i noticed the engine wasn't responding like it had been, it just felt sluggish. i noticed that the mpg started dropping, i usually get around 19.2 city (im chalking it up to the way i drive) but it has steadily been dropping in the past week, the truck is telling me im now getting around 11.4 mpg and the truck threw a p0299 code the other day. what should i check and look for?

Joe F

P0299 is under/lack of boost. Here are additional possibilities and things to look for:

https://www.obd-codes.com/p0299