This might be a dumb question. My check engine light is on, its yellow. Is it really a big concern? and also is there a red check engine light?

 

no thier isnt a red check engine ligt.. when theirs a serious problem the check ebngine light will flash either fast or slow when its solid the car is pretty much teling you to check to see what the problem is... when mine came on t was my EGR nothing big but really needed (kills gas mileage) goto your local mechanic or Auto Zone and and get it checked out... good luck