Analysis of Wuling Hongguang Mini Malfunction Indicator Lights

[DiEllie]

Analysis of Wuling Hongguang Mini malfunction indicator lights is as follows: 1. Poor-quality gasoline: This is usually caused by filling up with substandard gasoline at non-compliant gas stations, resulting in incomplete combustion of the air-fuel mixture during engine operation and triggering the engine malfunction light. While this does not affect driving safety, it may cause some degree of harm to the engine. 2. Oxygen sensor failure: Modern vehicles are equipped with two oxygen sensors, one before and one after the three-way catalytic converter. The front oxygen sensor detects the air-fuel ratio under different engine operating conditions, and the ECU adjusts fuel injection and calculates ignition timing based on this signal. The rear sensor primarily monitors the performance of the three-way catalytic converter. Therefore, if the oxygen sensor is damaged or the sensor connector is faulty or loose, it may cause the air-fuel mixture to become too lean or too rich, leading to the illumination of the malfunction indicator light.