Why does the warning light come on every time I drive on the highway?

[AlessandraFitz]

Engine warning lights usually come on for the following reasons: 1. Poor combustion state. Poor engine combustion is the main cause of the engine warning light. 2. Engine knocking, which is usually divided into three situations: lack of power in the car, lack of power in the car, and excessive engine noise. In the first situation, some engine warning lights may come on, while others may not. In the second and third situations, the engine warning light will inevitably come on. The following are the internal reasons for the engine warning light coming on: 1. Poor fuel quality. 2. The engine cylinders are not clean and have accumulated carbon deposits.