I have a 2003 3500 with an auto, about a month ago my truck lost power and developed a rough idle. I checked the codes with the Smarty and it read P0204 and P2149. I googled the P0204 code and it was for the #4 injector. I replaced the injector and the connector tube. The truck started up and ran fine for a week. Then I was going out of town for a weekend and the truck lost power again. I checked it with the smarty and it was the P2149 again. I had the truck towed home and it started up just fine. Drove it again and the truck lost power. Again it was P2149. Cleared the code and it drove fine. Now my truck is parked. Any help would be greatly appreciated.
Thanks
Mike

 

may be a problem with you wiring rubbing into from what ive read here is what i found on google havent personally had any to work on myself

code present when the FICM harness rubs through against the alternator