Evaporative Emission Control System Leak Detected (gross leak)

The engine detected a large leak in the fuel vapor system, allowing significant amounts of gasoline fumes to escape to the atmosphere. Common causes include a loose or missing fuel cap, cracked hoses, a leaking fuel injector O-ring, or a faulty purge valve. You will definitely fail an emissions test, and fuel smell around the vehicle indicates an environmental and safety concern.

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