Rawze.com: Rawze's ISX Technical Discussion and more

Yes I cleaned all of the pipes and those 2 lines going to the sensor aswell

Did you make sure the two lines were not cracked or tore? I know that will throw a code, happened to me in the past. Replaced the lines, code gone.

There are rubber lines under that red heat wrap along with the steel tubing. It is those rubber lines that with age fail. Very hard to diagnose without careful inspection.

I took both lines apart and inspected both lines they seem to me fine.

I got nothing then...

I appreciate you help though. Thanks @waterloo

rawze do you have any other suggestions

Go back and read Rawze's post, he told you these other things to look at as well.......

Reflash ecm

Tarnished connector pins

Wiring problem

It thinks the delta p is unplugged so start checking connections. Go to quickserve look at wiring diagrams.

the next step I suppose is getting ecm checked to see if it needs an update or flashing. idk

Do you have a quickserve account? If not go sign up it's free. Step 2 type in code number and follow troubleshooting tree.
Step 3 fix truck with newly learned information!!