Well, I just wrote a long explanation about my car's problems and hit enter and it was lost. Very frustrating...

Our E320 BlueTec is eating oil, went into limp mode on a freeway trip and is not a happy camper.

A friend came over with his scanner, a high dollar SnapOn and found the following codes. His machine will read the codes and clear them, but, it won't tell us what they mean. I would greatly appreciate if someone with Star software could look these up for me. I've searched the web and cannot find info directly for the om642.

P2359
P2940
P2624
P2633
P2355

Well, I just wrote a long explanation about my car's problems and hit enter and it was lost. Very frustrating...

Our E320 BlueTec is eating oil, went into limp mode on a freeway trip and is not a happy camper.

A friend came over with his scanner, a high dollar SnapOn and found the following codes. His machine will read the codes and clear them, but, it won't tell us what they mean. I would greatly appreciate if someone with Star software could look these up for me. I've searched the web and cannot find info directly for the om642.

P2359
P2940
P2624
P2633
P2355

UPDATE 9/1:

Here is the full story. History, problems, and work done. I've searched other forums, google, etc. without finding out much.

History:
purchased 2017 with 131k not a lot of service records.
Car has oil changes at 5-6k with Pentozin 5w-40 229.51, mann filters
car gets 32-33mpg highway.
Car has 167.6K

Problems
135K oil cooler seal, timing chain, and tranny service. (independent shop)
150K MAF assembly replaced due to codes P2355, P2633 Have never been able to clear codes since.
162k oil change before 1200 mile trip. 400 miles into trip "ADD OIL notice". Car used 3.5 quarts in total
163K replaced ccv assembly and ccv mount. Cleaned out MAF to turbo tube
167.2K oil change, it was down 1 quart.
Took 250 mile day trip, 125 miles stopped, 33mpg, no problems
returning, 60 miles into trip, cruise control shut off and lost turbo boost, drove to house. 1 mile before home, stopped and filled car. 32mpg. started car and ran fine turbo and cruise control working.
167.4K it has used a pint of oil in 400 miles.

This takes me back to the opening codes found.

Work done:

1. Removed MAF assembly and found oil in the tube.
2. Removed ccv and found oil also
3. Disconnected and removed turbo actuator, opened, no broken wires or stripped gears
4. Inspected turbo, actuator lever moves freely, checked shaft spins easily, minimal play. Not a turbo expert, but, only side to side, nothing front/rear
5. Started car with electrical connections in place, ran at idle speed only
saw smoke vapor coming from ccv tube off white color
6. Loosened oil fill cap and laid there not bouncing. (quick blow by check)
7. removed aluminum tube from turbo to baffle and baffle. Both have oil in them. (teaspoon in tube, still draining baffle)

Questions:
1. Can anyone tell me what the codes are?
2. Has anyone had similar problem with excessive oil consumption? What was the cause?
3. Has anyone done a leak down test on om642? If so, please share the method.

In closing, I'm thinking either blown seal in turbo or blowby in the engine causing oil consumption, but, would really like to figure how to determine before spending a lot of money.

Thanks, Brian