BMW 430i Gran Coupe check engine light issue after gas refill with vent pipe leak diagnosis on BMW 430i Gran Coupe

Some BMW 430i Gran Coupe owners report experiencing check engine light issues after refueling, often linked to a vent pipe leak diagnosis. These issues can be triggered by various factors, including problems within the emissions system, which may require specific drive cycles to resolve. The check engine light, also known as the Malfunction Indicator Lamp (MIL), does not always indicate an engine malfunction but can signal other vehicle issues. Owners should be particularly vigilant about addressing potential leaks, such as a vent pipe leak, as these can significantly impact the emissions system and cause the check engine light to illuminate. While the light may clear itself after a few driving cycles if the issue was temporary, persistent problems necessitate further diagnosis and repair by a qualified mechanic.