What causes the engine warning light to come on?

[SanSarah]

Engine warning light comes on due to poor engine maintenance, faulty spark plugs, and intake issues. Poor engine maintenance: Improper engine maintenance is the most common cause of engine failure. Vehicles have specific maintenance schedules, and if the driver fails to adhere to these schedules along with poor driving habits, it increases the burden on the engine, ultimately triggering the warning light. Faulty spark plugs in the engine: Issues like faulty spark plugs, defective ignition coils, fuel pump failure, or clogged fuel lines can lead to improper combustion of the air-fuel mixture. This results in engine carbon buildup or knocking, which the engine's oxygen sensor detects and reports to the ECU, causing the warning light to illuminate. Intake problems: For combustion, the engine requires proper air intake, where the air filter plays a crucial role. If the car's air filter is dirty and not cleaned regularly, it affects the engine's air intake. Prolonged neglect can lead to blockages, and in severe cases, trigger the engine warning light.