E220 CDI power lost, limp mode on - Mercedes-Benz Forum
 
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#1 (permalink) Old 01-13-2009, 10:03 AM
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E220 CDI power lost, limp mode on

Hi all!

Couple of days ago, on motorway suddenly my car lost power totally - no acceleration at all after 120 km/h.
At slower speed, rpm raises more than 3500 before gear up. And still accelerates very slow.

Fault code was read: P2359 (Boost pressure too low/high)
Seems something wrong with turbo boost and different technicians suggest to swap parts one by one.
Error code cleaned up once and i had hope raised but too soon - after couple of km:s on highway limp-home is on again....
EGR, Cat, ECU, Air filter, MAF sensor or even anything els?
Is there any things witch I can check by myself before go to the dealers workshop to swap parts?

Thanks a lot!

BR redwing

Last edited by redwings91; 01-13-2009 at 11:00 AM.
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#2 (permalink) Old 01-13-2009, 11:06 AM
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How many miles, or kilometres does the car have?

If you do a search at this forum (W211 section) for EGR valve, you'll find quite a few hits. I guess it could be something else too (I'm not familiar with this anyway), some have had problems with the flaps at the air intake manifold. At least I would not start from the turbo charger when swapping parts, several workshops just assume a boost pressure fault code means a bad turbo which it unlikely is.
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#3 (permalink) Old 01-18-2009, 11:34 AM
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Now, couple of days later, engine warning light is on.
Before that, i found cracked pipe which come from the air intake to the sensor (air pressure?). It locates on the right side where is intake manifold.
Fix it - doesn't help , car is still sluggish like a cow. And later, warning light went on.
Tomorrow i go and read the codes at workshop....
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#4 (permalink) Old 12-02-2009, 01:21 AM
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Redwings, please send update. Did you manage to resolve the problem? I have a similar problem with my 2003 C220 CDI.
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#5 (permalink) Old 12-02-2009, 04:00 PM
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If you have loss boost pressure you may have a bad MAF sensor. I had a 99 E300 Turbo that lost boost twice and each time I read the code and it was the MAF. Cleaned the electronic contacts on the MAF with electronics parts cleaner and it was OK. I have noticed that my E320 CDI has the same sort of setup as the 99 E300 Turbo and the sensor is in the air stream and over a period of time gets dirty. Worth a try.
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#6 (permalink) Old 12-02-2009, 10:42 PM
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Thanks for the reply edwinwalke, sorry for my ignorance but is the MAS and MAF different names for the same thing. I'd like to give it a try, could you please explain to me where to look if I'm standing in front of the engine. Do I need to remove any covers to reach it?
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#7 (permalink) Old 12-03-2009, 01:07 AM
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Quote:
Originally Posted by EdiJedi View Post
Thanks for the reply edwinwalke, sorry for my ignorance but is the MAS and MAF different names for the same thing. I'd like to give it a try, could you please explain to me where to look if I'm standing in front of the engine. Do I need to remove any covers to reach it?
What we are talking about is the Mass Air Flow sensor. On my E320 CDI it is part of the air cleaner system on the left as you face the engine. Should be downstream of the actual air cleaner. What I did on the 99 E300 Turbo is spray the electrical sensor inside the plastic housing to remove any accumulated dirt. If you have a OBDII code reader it should read a code that will confirm the MAF sensor as the problem. If cleaning works you will still have to clear the code in the engine computer with a OBDII device. I would give it a try and see if it restores power and if it does worry about removing the codes.

Hope this helps.
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#8 (permalink) Old 12-09-2009, 10:59 AM
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Quote:
Originally Posted by EdiJedi View Post
Redwings, please send update. Did you manage to resolve the problem? I have a similar problem with my 2003 C220 CDI.

Yes , problem solved. I changed turbo at MB authorized workshop. But! that was not the original problem. Source of the problem was glogged rear catalysator.
Turbo was changed because some smart guys at non-authorized workshop bended turbos electronic actuator arm and that was R.I.P. for the turbo. But , yeah, catalysator. Actually, both catalysators was glogged - front one was cleaned first (read: removed) and seemed it's gonna be ok soon but thats not happened. After front cat removed and problem still existed, those geniuses got idea to bend arm, not to check rear cat also which would fix the problem.
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#9 (permalink) Old 01-30-2010, 01:30 PM
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Hi there i have the same problem,i have brought the car to MD and they told me its the EGR valve and replaced it,but it didnt work do you think its worth trying with the catalysts
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