0299 code limp mode

Kidcanada758

New member
Nov 14, 2014
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So... New to the site and to having a diesel bomber so bare with me I'm a rookie!! I'm having some issues with the dirtymax figured I'd look for some help. I'm sure this topic has been covered here but gonna bring it up again. Little bit about truck....
- 2007 lbz crew cab/short box
- 8" fab tech lift
- 35x12.5 goodyear tires
- straight exhaust
- k&n filter
- Edge attitude chip

So problems all started a couple weeks ago, one week after getting oil change and service, and new fuel filter engine oil life goes to 0% check engine come on. Edge clears check engine light 5 or 6 times over the next couple days before it goes away. Light has stayed out but oil life still 0%. Three days ago turning a corner check engine light comes on and truck goes into limp mode won't shift past second or go above 2000rpm. It's throwing a 0299 code which I do know is an underboost issue. Have to pull over and turn off truck, when I restart edge clears code and check engine light and the truck is fine. But does this 4 or 5 more times that day then goes away. Today the issue has come back!! Any suggestions?? Where do I even start to diagnose??
 
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