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Mercedes C 230 System too rich

  

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Hello I have a mercedes c 230 kompressor 2005 230000km check engine light was on saying system too lean but after I changed the valve cover gasket the code changed to system too rich. I replaced all the vacuum pipes  but still the check engine light is on what could be the problem?


What is the code(s)?


P0172


1 Answer
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FAQ > "I am getting a trouble light on my dash."


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