ok I have a 2006 5.9 cummins with a h7s black maxx I am now getting a p0513 invalid immobilzer key code the truck was running fine all day and went to leave a store started it up and it started then shut off the programmer now says that it is not installed and when trying to reinstall programming it says that I have non alpha numeric numbers and will not reinstall please help I am dead in the water without my truck any help is greatly needed and thanks in advance

 

Tow it to the dodge dealer to reflash the computer and key fobs. Check all your grounds something caused the scramble!

 

thanks for the help h&s reset the vin for me for now and I have the truck running with stock tuning now waiting for my appointment since the dealer is booked out that far

 

well the truck did it again and well now I am waiting till Monday to get the rest code to reprogram the ecm again I have an appointment with a shop on the 31 oct they say they can do it we will see I need this problem fixed soon I am supposed to be driving this truck back to texas from Fairbanks Alaska

 

Did you check your grounds?

 

all the grounds are tight I am hoping this can be fixed with out a new computer

 

tight doesn't mean clean take them apart and brush them!

 

Well the shop has the truck now and seems to be something wrong with the computer they have had it for 2 days and are still trying to figure it out they think something has corrupted in one of the modules

 

Ok well the first shop can't do anything they aparently don't have the right computer so its at the next shop trying to figure this crap out