Why is the Focus engine light on?

When the Fox engine fault light is on, it usually means that the combustion state of the engine is not good enough. If the engine combustion is not good, the sensor on the engine will detect it and send out an alarm. Poor engine combustion not only wastes fuel, but also causes wear and tear on the engine.

　　

Engine spark plug failure, ignition coil failure, fuel pump failure, oil circuit blockage failure, etc., all of which will cause poor combustion of the engine mixed gas, poor combustion of the mixed gas, and directly cause excessive carbon deposits in the engine. These will be monitored by the sensor. The car computer communicates and displays the warning light. If there is a problem with the sensor, it will also cause the engine fault light. The gear sensor is affected by the water temperature, air flow, and entry temperature, resulting in damage to the sensor, poor contact, and the car computer cannot read accurate data, which will cause the engine fault light to light up. Cars of poor quality can also set off the engine warning light and cause wear and tear on the engine.