What might cause my 2014 mercedes CLA 250 check engine light to come on?

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James M. February 2, 2021
There are a wide variety of reasons that could cause the check engine light to come on for Your 2014 Mercedes CLA 250 but let's go ahead and look at the most common reasons. The spark plugs going bad could cause this. You'll need to replace them around every 20,000 to 40,000 miles. The sensors going bad on You could also cause this light to go off. It could be either one of the oxygen sensors or the mass airflow sensor. A problem with the engine itself such as the fuel injection system could be a problem specifically for thiS-TYPE of vehicle.
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Brian R July 16, 2020
Check engine light illuminated in your 2014 mercedes cla 250 vehicle? Check for a loose gas cap first then move on to more complex issues like failed o2 sensors, evaporative emission leaks and serious engine troubles like blown head gaskets or misfiring spark plugs.
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