What are the most common causes of a check engine light?

The most common causes of a check engine light are a loose or faulty gas cap, a failing oxygen sensor, a bad catalytic converter, worn spark plugs or ignition coils, and a faulty mass airflow sensor. EVAP system leaks and vacuum leaks are also frequent triggers. A loose gas cap is the easiest fix and often resolves the light on its own once tightened, while sensor and converter issues require professional repair. Because dozens of different faults can trigger the same warning light, you cannot know the cause by looking at the light alone. A computerized diagnostic scan reads the trouble code and points to the specific failing component. At Motoro Cars in Miami, our ASE-certified, AAA-approved technicians diagnose the real cause instead of replacing parts by guesswork. Call Wynwood at (786) 634-2002 or Doral at (786) 633-3220 to schedule your scan.