A car is similar to your companion, but what distinguishes a good friend, a check engine light. Your car’s check engine light is a warning sign that lets you know something is wrong with it. You could ignore the code or have your car serviced if you don’t know what it means. Not all check engine lights are bad. It might sometimes point to a minor issue that won’t do much harm. Other codes, on the other hand, can indicate critical issues that demand immediate attention. A modern car is equipped with a computer (ECU) to perform a number of operations and monitor performances. ...   read more