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Mercedes C200d (201...
 
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Mercedes C200d (2015) Yellow Engine Light

  

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Car felt like it lost a bit of power on highway then felt normal. 
Light has remained on. Sufficient DEF in the SCR tank. 
idle seems rougher and acceleration is not as good. 
Mileage has suffered a bit. 

I suspect the NOx sensor. I do not have a scan tool. I need to make a few journeys. No engine countdown of 16 starts yet. As the light is steady yellow is it still okay to drive? Thanks

 

Journey 1 will be 10 miles to pick wife up from hospital. 
Journey 2 will be 15 miles to garage for repair. 


1 Answer
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As long as it's not flashing it runs good enough  it's generally safe to drive


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