2013 ML350 Bluetec p0299 code. help please! - Mercedes-Benz Forum
 
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post #1 of 3 (permalink) Old 10-02-2017, 10:33 AM Thread Starter
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2013 ML350 Bluetec p0299 code. help please!

Hello everyone,
I am new to the forum and new to Mercedes Benz, but not to diesels. As the title states, I have a 2013 ML350 with the BlueTec diesel and am getting a p0299 turbo underboost code. We have had this vehicle for a little over a year now and this has been the only issue so far. The check engine light came on last week while driving down the freeway and the vehicle wouldn't go over 62 MPH. After a little more driving down the freeway, it seemed to return to driving like normal, but the check engine light remains. I have since driven it a few times and sometimes it seems fine, other times it just doesn't seem to have it's normal power. once while driving it, I stopped, turned it off, re-started the vehicle and it performed normally. Any input would be appreciated. I am hoping maybe this is something simple. Thank you in advance for your input!
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post #2 of 3 (permalink) Old 07-09-2019, 12:34 PM
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Originally Posted by duallyguy View Post
Hello everyone,
I am new to the forum and new to Mercedes Benz, but not to diesels. As the title states, I have a 2013 ML350 with the BlueTec diesel and am getting a p0299 turbo underboost code. We have had this vehicle for a little over a year now and this has been the only issue so far. The check engine light came on last week while driving down the freeway and the vehicle wouldn't go over 62 MPH. After a little more driving down the freeway, it seemed to return to driving like normal, but the check engine light remains. I have since driven it a few times and sometimes it seems fine, other times it just doesn't seem to have it's normal power. once while driving it, I stopped, turned it off, re-started the vehicle and it performed normally. Any input would be appreciated. I am hoping maybe this is something simple. Thank you in advance for your input!
Having the same issue. Any resolution?
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post #3 of 3 (permalink) Old 07-10-2019, 01:09 AM
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2013 ML350 Bluetec p0299 code. help please!

I would check all your connections on the boost side of the intake and intercooler. Make sure a stone hasnít punctured it.


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