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C200 Engine management codes - help with interpretation

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by CnF, Jul 14, 2011.

  1. CnF

    CnF New Member

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    Joined:
    Jul 14, 2011
    Location:
    Cheshire
    Your Mercedes:
    C200, 2005, Diesel
    Hi all,

    I have a C200 diesel (55 plate), and it's recently had the MIL come on (orange). I've plugged in the trusty old code reader and it's thrown three codes up. Any help in interpreting would be greatly appreciated. Car seems generally a bit low on power, and was for a while before the lights came on.

    Codes are:
    P0107 - Manifold absolute pressure/barometric pressure circuit low input
    P0472 - Exhaust pressure sensor low
    P0698 - Sensor reference voltage "C" circuit low

    I can find some info on what the first two relate to, but the third one has me completely foxed. I'm assuming, seeing as they were all there when I plugged in the code reader, that they're all related to the same issue that's triggering the MIL.

    It's booked in the dealer for next week, they think it's fine to drive for now and it's the first time they have a loan car. It is occasionally going into limp home mode (rev's limited), but only occasionally. It also has occasionally flashed up on the LCD display a message complaining about an oil pressure sensor error.

    Sounds a bit like it's a faulty sensor to me?

    Any comments/help greatly appreciated!

    Gary
     
  2. Miffy

    Miffy Senior Member

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    Joined:
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    Location:
    Bromley, London
    Your Mercedes:
    CLK 320 CAB Elegance C208
    I think P0698 relates to the throttle position sensor.
     
  3. OP
    CnF

    CnF New Member

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    Joined:
    Jul 14, 2011
    Location:
    Cheshire
    Your Mercedes:
    C200, 2005, Diesel
    Cheers, I can't find any reference to it anywhere.
     

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