What happened to the yellow light after the BMW 5 Series cleared the throttle?

Oil supply system problem: oil quality is the primary factor leading to engine fault light. As we all know, the antiknock performance of gasoline is expressed by octane number. The higher the octane number, the better the antiknock performance. Therefore, the quality of engine oil is the main cause of insufficient engine combustion, which leads to engine failure light.

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Poor combustion state: The poor combustion state of the engine is the main reason for the engine fault light. In automobile design, in order to ensure that the engine is in good working condition and the normal working life of the engine, in