回複：我的檢查引擎燈亮可能是加油引起的

I have my indicator on after filling gas. I did not remember what gas was filled. But I turned the cover tightly and the indicator still on. The problem how can I know the indicator-on is due to the gasoline? I filled the same gas long before there, but there was no indicator-on. Does this mean the gas is not the cause?

Thanks