A friend of mine has an 04.5 Dodge 3500 with 300,000 miles on it and stock injectors in it. It has been reflashed or updated with Dodges lastest software release but continues to turn on the intake heater light and set a p1222 code and derate power. I understand this could be due to a higher than exceptable rate of return from one or more injectors. Thing is the truck runs great until it does this and it doesn't do it all the time. Is there a way to disable this in the ecm? I have found some stock tune files with this code and others without it but I am sure it is more than just setting the code to not report? Thank you for any help.