W203 Fault code help! P2078, P1437 P2648 - Mercedes-Benz Forum

LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 06-23-2012, 07:29 AM Thread Starter
BenzWorld Junior Member
Date registered: Feb 2011
Posts: 9
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
W203 Fault code help! P2078, P1437 P2648

Hey guys very long story short here...

W203 C220 CDI 54 Plate Saloon

About a year ago my engine management light came on and it read as the DPF was too full, had a forced regen. All good for a month then the light came on and I assumed it was the DPF that needed sorting, anyway carried on driving for a good few weeks with the light coming on and off 2/3 times a week. No change to the performance etc... I've gotten round to selling the car as I've had too many problems, so decided I'd better get the DPF sorted!

Went this morning to get the fault codes read and none of them come up related to the DPF.

P2078 Is apparently the Intake Manifold Valve? is this the EGR valve?
Should I just buy a new one or are there other things to check that go wrong, eg wiring?....
Would this cause the engine managment light to come on and off?
Only recently after 14 months of driving has the car gone into limp mode, and they were for 2 short stints, maybe 2 hours-ish.

Next code comes up as P2648 Something to do with the rocker arm?
Could this cause the light to come on and off?
What could this problem be and what do I need to do to sort it?
Is it an expensive job? I've literally no idea!

Final fault...

P1437 Something to do with the aircon Evapourator Temp Control? I doubt this would cause the car to go into limp mode??
My air cons never worked but I don't use aircon so never chased it up. Is this a big job? What could this be???

All I want to do is sell the car with a clear dash board so I don't feel angry as I see it leave me!!!!

Thanks in advance.
Musk Man Benji is offline  
Sponsored Links

  Mercedes-Benz Forum > General Mercedes-Benz Forums > General Mercedes-Benz

Quick Reply

Register Now

In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


  • Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
    Thread Tools
    Show Printable Version Show Printable Version
    Email this Page Email this Page
    Display Modes
    Linear Mode Linear Mode

    Posting Rules  
    You may post new threads
    You may post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are On
    Pingbacks are On
    Refbacks are On


    Title goes here

    video goes here
    description goes here. Read Full Story
    For the best viewing experience please update your browser to Google Chrome