W211 E320CDI Boost Pressure Regulator woes

[mazi]

I have a 2008 E320cdi, I have a intermittent limp mode with occasional EML.

Fault codes are as follows:
2510 Check componentY77/1 (boost pressure`regulator)
2030 Check component G3/2 o2 sensor upstream of CAT open circuit
2038 G3/2 resistance too small
2195 Heating check comp G/32 signal interupted

Any pointers appreciated...

 

[CanisMajoris]

I had the 2510 Check componentY77/1 (boost pressure`regulator) error along with a couple sensor errors on my W211 when I first bought it.

Turns out the seal to the turbo was leaking oil and dripped on to the Inlet Port Shutoff Motor (IPS Motor) which is conveniently located underneath the seal. Also the actuator was faulty so those 2 had to be replaced and the seal repaired. I may have a few pictures somewhere on my phone to show where the leak was coming from.

There was an updated pcv breather pipe that has a much fatter orange seal with a clamp on it where it goes into the side of the batwing in front of the turbo.

Cost me a whopping £745 to rectify that.

 

[W1ghty]

If I were you I would open and clean the actuator with electrical contact spray and check the 4 wires on the outside of the board inside have no breaks in them . Put a tiny amount of high temp grease on the worm gear inside
Replace the pcv with the new updated one .
Spray clean the inside of the exhaust back pressure sensor with carb cleaner .
Change the orange seal at the front of the turbo .
Check fuse F44 15amp in the engine bay fuse box by the brake fluid reservoir .
If that doesn’t work , try putting a 4.7k ohm resistor into the the middle 2 terminals of the inlet port motor (cost £2 ish ) .
I wouldn’t want to pay for a new actuator or turbo until this free stuff has been done

 

[mazi]

I was told it may be swirl flap related and to put a resistor on to keep swirl flaps open........
Is that what you are talking about??

 

[W1ghty]

I was told it may be swirl flap related and to put a resistor on to keep swirl flaps open........
Is that what you are talking about??

Yes it is , but everything I’ve mentioned is pretty interconnected and free