epg1 problem

This is schematics to inspect and check wiring and check solenoid
and component locations

Newer purchase parts before you do diagnostics and inspection of wiring

 

is the bigger photo available?

 

Hi, i have a 2003 volvo d12 465hp
Mechanics said that wiring is getting signal but has an X on solenoid.
I have code mid 128 ppid 123 fmi 5 and
Mid 128 ppid 124 fmi 5

 

I wish that volvo wants to give me parts numbee i would replace both epg parts find some aftermarket becouse it is to expensive in volvo.

 

After months of a couple psi of turbo loss, and a squeaking engine brake, loss of fuel mileage, I finally figure out it must be the epg. My fan clutch has been squeaking as well recently. Yesterday it was raining and I went to use my engine brake to slow down on an off ramp and it just sounded like air with water rushing through it. I then went to leave and I was down below 10 psi turbo and no acceleration at all. I guess this is my epg stuck closed? The psi would eventually return to around 18 psi and have some power but i used to get 30 and had been around 27 for a month. The epg parts are really expensive on this. Is it worth trying to clean it? I havent found any aftermarket at all. Epg 20722238 06 volvo d12. $1000, valve $600... if i block off the intake i just lose my level 1 exhaust brake? Apply air pressure to get it fully opened? Thats what ive gathered reading all these posts. Any help appreciated.