What is the reason for the constant illumination of the dashboard warning light in a Mercedes-Benz A200?

[DiDaniela]

The reason for the constant illumination of the dashboard warning light in a Mercedes-Benz A200 is due to unqualified exhaust emissions, poor engine system performance, and transmission system faults in some vehicles. Unqualified exhaust emissions: Factors such as poor fuel quality, failure of the three-way catalytic converter, excessive carbon buildup in the intake pipe, clogged fuel injectors, faulty oxygen sensors, or occasional engine misfires can all trigger the engine warning light. Among these, poor fuel quality is the most common cause. Poor engine system performance: Issues like faulty throttle pedal sensors, throttle position sensors, mass airflow sensors, crankshaft position sensors, or poor electrical connections can lead to the illumination of the engine warning light. Transmission system faults in some vehicles: In some vehicles, transmission system faults such as internal transmission failures, slippage, or overheating are also indicated through the engine warning light.