What you want to ask is what caused the engine failure of Carey Youyou diesel yellow exclamation mark? The reason for this is the following：

1, the engine fault indicator is on because there is something wrong with the engine cooling water or the water temperature is too high.

2. The air flow sensor, engine speed sensor or control unit of the vehicle is damaged, which causes the engine management system to receive an error message.

3. Low vehicle oil pressure will also cause the engine fault indicator light to light up.