What is the reason for the engine warning light turning on and off intermittently?

[VonXavier]

The engine warning light turns on and off intermittently due to false error codes from sensors or sensors being on the verge of failure. Below are detailed explanations for the intermittent engine warning light: False error codes from sensors: As the vehicle is used, the onboard computer may detect no actual fault. After several ignition cycles and self-checks, the warning light may automatically turn off. If communication between the sensor and the computer is interrupted once or for a period due to unexpected circumstances, the computer may interpret this as a fault and illuminate the warning light. However, once communication is restored, the warning light may also turn off automatically after several ignition cycles. Sensors on the verge of failure: If a sensor is on the verge of failure, working intermittently, the warning light may illuminate when the sensor malfunctions and turn off after the sensor resumes normal operation for a period.