[chrisheltra]

Well last night I was coming home from the dragstrip and threw a P0171 and P0174 code. Bank 1&2 lean. I also threw another one but cant remember off the top of my head what the number was. It was something about air charge temp and it happened right after I got off the interstate. I havent done any mods to the truck since about April and got a dyno tune shortly after so thats not the problem. What are some of the common causes for these codes to come up. Are all of these codes related to the same problem?