Nissan Altima persistent loose gas cap warning light causing check engine light issue on Nissan Altima

Some Nissan Altima owners report experiencing persistent loose gas cap warning lights that trigger the check engine light. This issue often arises due to the fuel system not being sealed properly, allowing evaporative emissions to escape. While a loose gas cap is generally considered a minor problem, it is important to address it promptly to prevent potential damage to the emissions system and maintain optimal vehicle performance. Ignoring the warning can lead to the check engine light remaining illuminated, indicating a more serious issue that may require professional attention. Many owners find that simply tightening or replacing the gas cap resolves the problem, but if the check engine light persists, it is recommended to consult a Nissan professional for a thorough diagnosis and necessary repairs. Addressing even minor issues like this can help ensure the long-term health and performance of the Nissan Altima.