Check engine light and tons more
A certified technician can perform a diagnostic (preferably immediately) to determine what needs to be done to correct the problem before it causes permanent damage to your car. Do not take your car to an auto parts store for diagnostic work. Employees can only interpret your car's stored trouble codes and are not trained to diagnose and repair the actual problem. (A trouble code is a message that your onboard computer stores in its memory whenever it detects a problem. ) Your technician takes several steps to properly diagnose your check engine light.