What is the round yellow and black logo on the engine?

It's a fault prompt. According to the Internet of Vehicles, the indicator light of the yellow engine logo lights up to indicate that the engine is faulty. Reason for failure:

1, the yellow light is on because the throttle is too dirty, the fuel quality is faulty, the oxygen sensor is faulty, and the three-way catalyst is blocked. The impact on the safe driving of the vehicle is great or small, and the owner should check the engine system as soon as possible.

2. The engine fault light is on. Reason: The quality of gasoline is poor, and it is not up to standard. It is because inferior gasoline was added to the non-standard gas station, which led to insufficient combustion of oil-gas mixture when the engine was working, and the engine fault light was on. This will not affect the driving safety, but it will do harm to the engine.