I have a MB 2009 E320. It went in to limp mode with codes P 0299.

Asked by Jan Jan 16, 2022 at 09:04 PM about the 2009 Mercedes-Benz E-Class E 320 BlueTEC

Question type: Maintenance & Repair

After 3 trips to repair shop, and $5000…my car is still going into limp mode.  
I’ve had the following done:  smoke test, new fuel filter, fuel line manually
cleaned, EGR cooler kit w/seals and gaskets, and last a turbo actuator.  The
last receipt remarks state their is oil within the charge pipes.  However the
manager told me that all the upper end carbon has been cleaned
The Turbo actuator was replaced which control the vane control.  The
converters were not cleaned or dpf which cleaning would most likely help the
situation.  They don’t offer that service.  Then I had fault code 2359, and took
locally to have it read and turned off. I then ordered a MB code reader.  Will
attach photos.  Now fault code P0299.   Any  suggestions would be greatly
appreciated.  

2 Answers
2,860

VRoom12345 answered 2 years ago

You really should take the vehicle to a reputable MB independent garage. aP0299 is a general turbo underboost code. So it could be a few things a fault with the turbo or supercharger, engine has low oil pressure, EGR system is faulty, air intake blockage or leak, or the boost pressure sensor is faulty. Good Luck finding the problem.

Mark helpful

Jan answered 2 years ago

Thank you for reply. I’m currently getting fault code P2A00, and have ordered an 02 air fuel circuit, #1 upstream sensor to have my husband install. Trying to figure out where that sensor goes? I know it’s passenger side, I believe it’s before the cat converter, wherever that is. ‍♀️ I’ve been told it’s behind engine near firewall, and a diagram I found shows it to be underneath rear, exhaust area. Any help would be greatly appreciated.

Mark helpful

Your Answer:

Related Questions

Own this car?

Share your experience with others.

2009 Mercedes-Benz E-Class

Write a car review

Review another car

Shortcuts

Search Mercedes-Benz E-Class Questions

CarGurus Experts

  • #1
    Soranbook
    Reputation
    3,040
  • #2
    dandyoun
    Reputation
    2,990
  • #3
    bobkat
    Reputation
    2,970
View All

Know more, shop wisely

Search

Related Models For Sale

Used Mercedes-Benz C-Class
942 Great Deals out of 17,432 listings starting at $875
Used Mercedes-Benz S-Class
307 Great Deals out of 6,942 listings starting at $2,499
Used Mercedes-Benz CLS
83 Great Deals out of 1,179 listings starting at $3,498
Used BMW 5 Series
809 Great Deals out of 11,426 listings starting at $700
Used BMW 3 Series
1,135 Great Deals out of 12,792 listings starting at $996
Used BMW M5
34 Great Deals out of 542 listings starting at $13,484
Used Mercedes-Benz SL-Class
117 Great Deals out of 2,499 listings starting at $5,699
Used BMW M3
51 Great Deals out of 1,091 listings starting at $12,000
Used BMW 7 Series
248 Great Deals out of 4,168 listings starting at $5,200
Used Chevrolet Corvette
696 Great Deals out of 12,194 listings starting at $3,200

Used Cars for Sale

2023 Mercedes-Benz E-Class For Sale
82 Great Deals out of 1,505 listings starting at $45,985
2022 Mercedes-Benz E-Class For Sale
24 Great Deals out of 232 listings starting at $35,118
2021 Mercedes-Benz E-Class For Sale
58 Great Deals out of 701 listings starting at $27,152
2020 Mercedes-Benz E-Class For Sale
54 Great Deals out of 565 listings starting at $19,952
2019 Mercedes-Benz E-Class For Sale
46 Great Deals out of 550 listings starting at $18,998

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.