Is the Exhaust Monitoring System Warning Light Serious?

[CaydenMarie]

The exhaust monitoring system warning light is not serious. Here is relevant information about the exhaust monitoring system warning light: 1. Concept: The exhaust monitoring light indicates poor engine operation and non-compliant exhaust emissions. The ECU generally has a self-diagnosis and protection function. When a system fault occurs, it automatically records the fault code in RAM and adopts protective measures to read substitute programs from the inherent program to maintain engine operation. 2. Causes: Engine spark plug failure, ignition coil failure, fuel pump failure, fuel line blockage, etc., can all cause poor combustion of the engine's air-fuel mixture. Poor combustion of the air-fuel mixture leads to engine carbon deposits or knocking problems, which are ultimately detected by the engine's oxygen sensor. After being reported to the ECU, the fault light naturally comes on as a warning.