07 dodge 2500 with p2146 code truck still runs and pulls great anyone know what the code means??

 

Check the valve cover wiring harness. Probably that gasket connector. Could be a bad injector, but unlikely since it's running good.

 

the P2146 code is Fuel injector group A Supply voltage Circ/Open... have you had your valve cover off? injector work? set your valves? im almost positive group A is the front 3injectors check the plug its self clean with contact cleaner. and put A small amount of dielectric grease in the connector> clear the codes and see if that works. if not pull the valvecover and check all injector connections and wiring clearance from the rocker bridges...