What does it mean when the engine light turns yellow after refueling the car?

[Todd]

When the engine light turns yellow after refueling the car, it is usually due to poor fuel quality. The solution is to drain all the poor-quality fuel and refill with high-quality fuel. After starting the engine for about 30 seconds, the engine warning light will automatically turn off. Fuel quality is the primary factor causing the engine warning light to illuminate. The anti-knock property of gasoline is represented by its octane rating - the higher the octane number, the better the anti-knock performance. Engines have specific requirements for fuel quality indicators, especially as various regulations impose increasingly higher demands on engines, which correspondingly raises the requirements for fuel quality standards. When refueling, it's essential to use gasoline with the octane rating specified for your vehicle. Never use fuel with a lower octane rating than required or substandard gasoline, as this ensures fuel quality and prevents potential damage to your vehicle.