My Mercedes engine light came on and I used my OB and it is throwing a Po300, PO171 and a PO174. What do those codes mean?

Asked by RunOut Aug 05, 2013 at 08:27 AM about the 2003 Mercedes-Benz S-Class S 500

Question type: Maintenance & Repair

Just trying to find out what the codes mean and what I can do to fix.  Basically the car runs really good.  It kinda of misses or is rough when cold but that changes when warms up.

3 Answers

RunOut answered 11 years ago

Thank you very much for your help. I am always dumbfounded sometimes at the different replies people give you. I had a mobile mechanic tell me that all I need was a coil. Your answer sounds more correct. Thanks again, Mr. Cloyd

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545

Joe answered 10 years ago

Maybe the time to change AIR FLOW MITER Sensor, Make sure its not for eBay or cheap from China. Try to get original one.

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