What does it mean when the engine fault light is yellow?

[LeManuel]

When the engine fault light is yellow, it indicates a fault in the engine exhaust system. If the light turns off a few seconds after starting the engine, it means the system is undergoing a normal self-check. If the light remains on, there may be a fault in the exhaust system. If the light flashes, it indicates engine misfiring, which can damage the catalytic converter. When the engine (exhaust system) fault light is on, if the coolant temperature gauge and oil pressure warning light are not activated, the vehicle can still be driven, but it must be done cautiously at a slow speed, and you should seek the nearest auto repair shop for inspection. If the coolant temperature is too high or the oil pressure warning light is also on, and you clearly feel the vehicle malfunctioning, you should immediately pull over and request assistance.