so im pulling an empty 25'(on the floor)g.neck stock trailer from AZ to WY...in Denver my eng light comes on and the truck intermittenly "jerks" and blows grayish smoke. I originally thought the GB trans was acting up because the solenoid ?? is bad(hunts 1-2 gear) I pulled into Dodge in Ft Collins and he Dan (thanks for hooking me up) read and erased these codes.P2149 bank2, p2146 bank1..bank 1 circuit high or low. Unfortunately, what he wrote down got wet so I may be a little off because of smearing..but it made sense as I belive these are injector codes which explain the stumble and smoke. The truck has shown eng. light before i the middle of a long tow and, as in this case, goes away after a day or so and runs fine. Heres the wierd part..my EDGE froze up..wouldnt read anything as I was driving..then cleared itself after ign. off/on t refuel. Is my box bad..could this cause the injector fault? Oh and there's more read next post

Vehicle Application: 2003 Dodge Ram 2500 Pickup 5.9L, DIESEL, Vin C, Turbo, Eng Cfg L6, USA/Canada 
 
Customer Concern: Lack of power and code P2146. The injectors and wiring seem to test normally. 
Tests/Procedures: 1. Remove the two wires from each one of the affected cylinders injectors. In this case cylinders 1, 2, 3. Do this one at a time. Isolate the wires so they do not ground out. Clear the code with the scan tool and start the engine back up. If the code resets, install the wires and take off the next two wires for the next cylinder. If the code does not return with one of the injectors disconnected, that injector is failing under load. Replace it.

2. If the code continues to reset after all injectors are isolated, replace the Electronic Control Module (ECM). Be aware that the ECM comes blank and will need to be programmed after replacement. The vehicle will not start without programming. 
Potential Causes: ECM
Injector
 
Diagnostic Codes: P2146 
 
Average Reported Mileage: 54000 
 
 
 
Confirmed Fix Summary   
 
 Confirmed Fix 1 -  Fuel Injector(s)
1 -  Power Chip