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Master
2,272 Answers
- Posted on Oct 01, 2010
Re: My C230 Mercedes has check engine light on. Car...
P0171 indicates a lean condition. The most common cause of this is a defective mass air flow sensor. Also check if any vacuum leaks.Replace MAf sensor,if cleaning the MAF does not help.
Thanks.
code came out p0300 want to know what that means said misfire
ours is a 2006 and we had the same issue and codes, it ended up being the timing chain, and the camshaft position sensor and the mass air flow sensor. pay the $109 for the Mercedes diagnostic, and go from there, In a mercedes everything works together and depends on each other so much that any one miniscule thing can cause it to throw numerous codes. Its best to let Mercedes do the diagnostic so you know exactly what is the issue, and it seem when anything is replaced or fixed on the engine it requires reprogramming the engines electronics to all work properly. I would highly advise taking it to the Benz house or a shop that is ASE Certified to work on foreign cars, and has a tech that is specifically trained on Mercedes, because if not they will treat it like a chevy and you'll be burning money because things might get replaced but until its taken into the shop and reprogrammed the check engine light will remain or you can get it reset, but you car will not be running to its true potential because everything has to be synced to work together.
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