Check high pressure control?!

Hello everyone.

e220cdi 2007 car: I'm getting strange code for on diagnostic machine: "227C - check component M55 (inlet port shutoff motor)"
so there is a programm in diagnostics called "Check high pressure control" which give me these results at idle (about ~880) :

Check high pressure control
- Coolant temperature 74℃
- Fuel temperature 47℃
- Rail pressure 802 bar
- Rail pressure variation -530
- Duty cycle of quantity control valve 58%
- Rail pressure regulation ________________
________ Y74 pressure control valve
- Duration period of main injection 361mS

Anyone can help with these stats? do they looks right for you?

I could not get a snap shot at the time but looks exactly the same as writen above. what worries me there is no data/numeration at "rail pressure regulation" just long black line?! Does it mean it cannot read it? or it's normal? May be connection loose or something like that?

Thanks in advance