what do these codes mean
 

P2149 Fuel Injector Group 2 Supply Voltage Circuit and also p0191 does my truck need to go to the shop for this what could be wrong i had the hot juice installed on it thanks

You'll see three wiring connectors for the injectors on the drivers side of the engine. "Group 2" is the second one back. Being you played with the connector adding mods it's possible you caused it. Not sure on the p0191.....too many to remember, and too late to look it up.

P0191 Generic Fuel Rail Pressure Sensor Range/Performance
P2149 Generic Fuel Injector Group “B” Supply Voltage Circuit/Open

I would think that they were caused by the middle injection group connector and the fuel rail connector. Probably when you installed the Juice or because of some other connector reason while driving.

If the truck runs ok, the codes will clear after enough start run cycles. Could take a while. As long as every thing runs ok, check the connectors and make sure they are locked in. Then see if they clear and then if they come back.

Codes
 

Where can I find the diagnostic engine codes?
bgjohnb@adelphia.net

Tech Facts on this site:

https://www.dieseltruckresource.com/...n&onlynewfaq=1

A couple of online databases:

http://www.dodgedieseldatabase.com/odbii.htm

http://www.canobd2.com/support/DTC_lookup.asp