What are causes of the low boost code and what can i do to fix it, and are there any other effects of it besides it doesn't build boost? I am not sure if this all these things are relaited or not but when i first start the truck it idles perfect then after a few seconds of it running it idles rough then dies, and i can only get it to turn about 2600 rpm. Could the low boost code be making it go into a limp mode?