What does it mean when the yellow engine light comes on in a car?

[Elle]

The yellow engine indicator light coming on indicates that there is a fault in the engine, but this fault is just a "common conventional fault". Here is some relevant information about the yellow engine indicator light coming on: 1. There is a fault in the engine. At this time, the "common conventional faults" are generally mainly: the throttle is too dirty, or there is a problem with the fuel quality, or the oxygen sensor is faulty, the three-way catalytic converter is clogged, and other common issues. 2. The engine fault does not have a significant impact on the safe driving of the vehicle, but you should find time to inspect and repair the engine system as soon as possible. 3. The yellow engine light indicates an intermittent fault in the engine, which means that the engine control system has detected a deviation in the engine condition or a sensor signal.