the car drive smooth and check engine light was not coming on now 2days later it is onDoes this always mean something is wrong with the engine?How come light did not come on when i test drove it and kept starting it up and cutting it off it also sounds really quiet but not two days later i go to start up the car and the check engine light come on could they had of known this and did something for light to not come on when i test drove? Other then the light coming on there are no problems i can see with this vehicle.ANy and all answers will be helpfulThanks
The check engine light comes on when a sensor reads out of the allowable range. It could have been caused by something simple, such as not turning the car off when you were getting fuel (setting an evaporative emissions system code), or it could have been caused by an engine misfire, or other problem. Have the computer scanned for codes, many auto parts chains will do this for free. The code will tell you what the problem is.
