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Posts Tagged: Evaporative System (EVAP) Monitor

Evaporative System (EVAP) Monitor — I/M EVAP Monitor

Evaporative System (EVAP) Monitor All OBD2 vehicles are equipped with a fuel Evaporative system (EVAP) that prevent fuel vapors from evaporating into the air. The EVAP system stores fuel vapor in a charcoal canister during fillup. After fillup, the ECM commands a purge cycle where the fuel vapors are burned in the engine and the system conducts and integrity test to ensure there are no fuel vapor leaks. Each manufacturer conducts the integrity test in their own way. How the EVAP system works After fillup, the system open a purge valve … Read More


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