What Causes the Car Warning Light to Keep Flashing?

[DeTimothy]

The reasons for the car warning light continuously flashing include sensor issues, maintenance problems, etc. Specific explanations are as follows: Sensor Issues: Sensors include those for coolant temperature, crankshaft position, air flow, intake air temperature, oxygen sensors, etc. When these sensors are damaged, have poor contact, or experience signal interruption, the car's ECU cannot accurately obtain engine data, which will trigger the engine warning light. Maintenance Problems: Poor engine maintenance is the most common cause of the engine warning light turning on. Vehicles have specific maintenance cycles. If the owner does not perform maintenance on schedule, combined with poor driving habits, it will increase the operational burden on the engine. Fuel Quality Issues: Fuel quality includes both fuel and engine oil. Cars generally have specific fuel grade requirements, and engine oil is categorized into semi-synthetic and fully synthetic types, as usually recommended by manufacturers. If the owner does not adhere to the required specifications, it will lead to engine wear over time.