2008 Detroit 60 series code help rough idle

Hi. I have a 2008 Freightliner Cascadia Detroit 60 that has a very rough engine idle and will die. I have a code reader, but no type of scan tool. Wondering if anyone has some insight into the codes I pulled of truck.

ENG
HIGH 128s155 00

ENG SA00 SPN003 720
15

ENG SA00 SPN000051
THROTTLE POSITION 03

ENG Auxout Driver 3
Sht Hi 128s051 03

Any help is appreciated. THANKS. -Mark

 

More information has surfaced. Truck started having trouble after SRS and TRS sensor replacement. Reinstalled old sensors and truck is still the same. Wiring at sensors looks fine. In process of checking wiring harness right now. Anyone know if there is some type of programming needed with TRS/SRS replacement. They sure look like plain magnetic pickups to me. No metal or debris on either sensors. Thanks for any help. -Mark

 

update in case someone has similar problem - injector wiring harness took in engine oil and it migrated into engine wiring harness - had to replace both harnesses and engine computer - then have new ecm programmed at dealer - not fun to do but did fix the truck