2007 e320 Intermittent boost. Help with codes.
I have done turbo actuator control tests and it moves properly. "I also replaced it"
Star is showing
Charge pressure positioner. >= 85.0. reading 5.0
On/Off ratio of component Y94 (Quantity control valve) (24.0..31.0) is always high. 42%
The system is throwing codes:
Rail pressure monitoring via volume control valve Rail Pressure deviation due to air forming in the system.
Hoping someone can give me some guidance. I previously had an injector problem that was caused by water which I resolved.


