Hello I have a 03 ram 2500 5.9 and everything is stock no programmer. I had injectors, cp3, and tps replaced about a month ago. Everything was doing good. I went to go pick up a load of hay and it has no power it takes for ever to get up to speed. I check voltage at fuel pressure switch all is good coming from the ecm. Ground is also good. I have wiggled wires as it’s running and nothing changes. I know the 0251 code FCA but not having any luck troubleshooting it without just throwing parts at it. The truck run and drives just does have the power it should. Any help would be greatly appreciated I have a 4 hour trip to make Friday and need my truck for work.

 

Update! Got it on a scanner and the brand new cp3 was junk. Went and got me another one and got it installed everything is running great again. Thank god for warranty!