N239 valve for intake manifold flap open or short to ground p3105

N75 boost pressure regulation valve open or short to ground p1549

N18 egr valve open circuit or short to ground p1441

I've got no boost on the car

I've replaced the vac box on the top of the strut and cleaned the egr valve out and tryed to clear codes but won't go can any one help

check the fuses as it sounds like there is no power to the vac box

Check wiring to the vac box on top of the drivers side strut, as I suspect its a wiring issue (being "short to ground") and not an issue with the box.

 

Same for the N239 which will be going to the EGR unit next to the Vac box on the intake side of the engine - that's got same fault.

 

Hopefully the N239 wiring thing is also causing the 3rd fault.  Check fuses as well as mentioned above as linked to the wiring circuit.

 

weirdly having checked all the fuse numbers to their job, I can't see one in relation to EGR or similar.