Why is there an engine symbol on the dashboard?

[LydiaLee]

An engine symbol appearing on the dashboard indicates that the ignition switch is turned on, the control indicator light is illuminated, and it will turn off shortly after the engine starts. If the engine light on the dashboard is yellow, it signifies a fault in the engine. The possible causes include: 1. A clogged air filter causing restricted airflow; 2. Poor fuel quality leading to increased carbon deposits inside the engine cylinders; 3. Faulty spark plugs, ignition coils, fuel pump, or blocked fuel lines causing improper combustion of the engine's air-fuel mixture; 4. Damaged, poorly connected, or interrupted signals from sensors such as the coolant temperature sensor, crankshaft position sensor, air flow sensor, intake air temperature sensor, or oxygen sensor, preventing the ECU from accurately obtaining engine data; 5. Improper maintenance increasing the operational burden on the engine.