What Causes the Engine Warning Light to Illuminate?

1 Answers
LaChristopher
07/29/25 1:43am
There are primarily three reasons why the engine warning light illuminates: 1. Dirty engine cylinders and carbon buildup: Excessive carbon deposits can make ignition difficult, leading to reverse breakdown of the ignition coil, ignition coil failure, poor ignition, incomplete combustion, and pollution, which triggers the engine warning light. 2. Poor engine combustion state is the main cause of the engine warning light: Faulty spark plugs, ignition coil issues, fuel pump failure, or clogged fuel lines can all result in poor combustion of the air-fuel mixture. This poor combustion leads to engine carbon buildup or knocking problems. 3. Poor fuel quality: Low-quality gasoline can cause incomplete combustion of the air-fuel mixture in the cylinders, resulting in the light turning on.
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