Help with 128:F07 Code

I have an '04 ISX 435 in an '04 International 9400.
Does 128:F07 SID 146 mean replace the EGR valve?
I'm having the EGR Cooler removed to pressure test this weekend for a seperate issue (coolant loss).
Is it a good idea to replace the EGR valve since the turbo and all the other "stuff" will be removed in order to get to the EGR cooler or can the EGR valve be replaced later without having to remove the turbo and everything else?
I'm hoping either:
a. The code means something else (less expensive)
b. The EGR valve can be changed later without having to disassemble everything.

With my luck, It will be neither. Lol.
Thanks in advance for your help.

 

Thanks Heavy D.