East County Auto is a trusted auto repair shop in Frederick, MD providing expert check engine light repair and diagnostic services for all makes and models of vehicles. Our honest and knowledgeable mechanics use state-of-the-art technology to properly diagnose the reason the check engine light is on in your vehicle. Whether the cause is routine maintenance service or a problem in need of repair, East County Auto can help. Our skilled ASE certified technicians will expertly repair your vehicle in a timely manner for an affordable price. Call 301-668-2929 or contact us to schedule a check engine light diagnostic service today.