Hey guys - new to this forum and could use some help.

Got an issue with my 06 CDI. She has 260k miles. One day she was fine, the next morning I have a loss of power and a CEL. She runs ok but no boost when you hit the pedal.

Codes are:
P0243 - Turbo wastegate malfunction
P2009 - fuel water content sensor.(fuel filter)
P0489 - Exhaust gas recirculation control short to earth
P0102A - Mass or Volume Air Flow Circuit Low Input
The descriptions are what I got off the web but I'm not 100% sure for my car. At the same time, I'm started getting a low coolant alarm on the dash but the coolant level is fine.

I doubt they are all the root cause so looking for real guidance. The only true symptom is the loss of power when accelerating.

I pulled the Air intake assembly off and inspected the MAF and Turbo for any loose wiring or connectors but don't see any. I cranked it up and had my son hit the accelerator but I cannot see the turbo linkage move (I think it would have moved in the time I tried it). I've wondered if a fuse might be the issue with all the different codes.

Thanks for the advise in advance!
Mark

 

Change the fuel filter first. its a $45 for the filter and the 2 hose clamps $3, and 20 minutes time DIY, you need a T20 bit too and a rag, there is no mess and you don't need to fill the filter or use a hand pump. Pull off the driver side top engine cover, the fuel filter is right there, you reuse the water sensor which pulls straight out after you remove the T20 screw. Buy the filter from Mercedes and its comes with o-rings for the sensor. You pop the old clamps with a small flat blade screwdriver (1/8"). You should buy the proper clip pliers to squeeze on the new clamps.