Evaporative Emission Control System Leak Detected (Small Leak)
Plain-English meaning
The vehicle's onboard diagnostics system has detected a small leak in the evaporative emission control (EVAP) system, which is responsible for capturing fuel vapors and preventing them from escaping into the atmosphere.
What to check first
Array
What not to replace yet
Array
Stop driving when
It is generally safe to continue driving, but avoid extended driving if strong fuel odors are present or if advised by a professional mechanic.
Related symptoms
Array
Owner steps
Array
Likely causes
Loose or damaged gas cap (medium)
Cracked or disconnected EVAP hoses (medium)
Faulty or damaged EVAP canister or purge valve (medium)
Leaking or damaged fuel tank (medium)
Defective EVAP system components such as vent valve (medium)
Shop steps
Array
Follow-up questions
Have you recently refueled the vehicle and checked the gas cap?
Is the Check Engine Light steady or flashing?
Have you noticed any fuel odors or leaks around the vehicle?
Has the vehicle failed an emissions test recently?
Are there any other diagnostic trouble codes present?