Masonprill98

Hi. I changed the oil and fuel filter in my 2001 Dodge 24v Cummins, it would crank but wouldnt start after changing the fuel filter. I tried bleeding any air out from the bleeder valve and I cracked the lines to see if there was any air. I got a little air out of the bleeder valve but no air out of the lines. I got it started on staring fluid. Drove it for 2 days ran/started fine after that. Third day I go out to start it to go to work and it would just crank. So I started looking at the truck and I found that the sending unit and the plug were bad, replaced both of them now the truck will run fine in 1,2,3 gear. But once I'm in 4th and 5th gear at about 1500rpm the truck will lose power and feels like it's missing. I scanned it and came up with P0602 P1693 P1596. Not to sure where to start with those codes so any help will be greatly appreciated, thank you