How to Solve the Engine Yellow Light Issue?

[StJosie]

Here are the methods to address the engine yellow light issue: 1. When the engine fault light on the dashboard illuminates, you can try starting and turning off the vehicle three times in a row, or disconnect the negative terminal of the engine battery, wait for 30 seconds, reconnect it, and then attempt to start the engine. After performing the above steps, check if the engine fault light on the dashboard is still on. 2. It's important to note that when the engine fault light on the dashboard illuminates, it usually cannot be manually reset. Typically, you need to visit a 4S shop to use a fault detection device for troubleshooting before it can be reset. The above methods are only applicable for false fault phenomena in the engine. If they prove ineffective, please visit a specialized repair shop for inspection and reset. Reasons for the engine yellow light on the dashboard include: 1. Sensor issues: The sensors mentioned here include those for coolant temperature, crankshaft position, air flow, intake temperature, oxygen, etc. When these sensors are damaged, have poor contact, or experience signal interruptions, the vehicle's ECU cannot accurately obtain engine data, which can cause the engine fault light to illuminate. 2. Maintenance issues: Poor engine maintenance is the most common cause of the engine fault light illuminating. Vehicles have specific maintenance cycles. If the owner does not adhere to the maintenance schedule and has poor driving habits, it will increase the operational burden on the engine, ultimately triggering the fault light as a reminder for maintenance. 3. Fuel quality issues: Fuel quality includes both fuel and engine oil. The fuel used in cars usually has a specific grade, and engine oil can be semi-synthetic or fully synthetic. Manufacturers generally recommend which grade of fuel and type of engine oil to use. If the owner does not follow these recommendations, prolonged use can lead to engine wear, causing the fault light to illuminate.