If your check engine light is on we can get your car repair code and fix the problem, usually right away. Newer vehicles come equipped with an onboard computer diagnostic system that monitors your vehicle’s engine and electrical system. The system monitors emissions control system as well. That means the monitors can detect anything from a loose fuel cap to a clogged catalytic converter. An illuminated check engine light means that the driver should have the vehicle checked for a car repair code as soon as possible; a flashing check engine light means that the driver should park and shut off the vehicle immediately – before serious engine or emissions system damage occurs. That’s where expressway Mechanic on Duty comes in. We have the diagnostic tools which will enable you to find out exactly why your check engine light is on.