How to Fix Abnormal Exhaust Controller?

[VanElias]

All faults that can affect the engine's power output may lead to abnormal exhaust control and trigger the fault light. There are many possible reasons for abnormal engine exhaust control causing the fault light to illuminate, which can be roughly categorized into the following three types: 1. False fault: A fault code is reported, but the engine operates normally. This might be due to an operation that temporarily exceeded the computer's control range, resulting in a feedback fault code. The code can be cleared first, and then observe whether the fault code reappears. 2. Major fault: The engine does not show obvious faults, but further inspection based on computer detection information reveals a genuine fault that does not affect normal driving or has minimal impact. It needs to be identified and resolved promptly. For example, a faulty intake pressure sensor, etc. 3. Minor fault: Such faults can be detected through visual inspection or driving experience and severely affect the engine's normal operation, requiring immediate repair. For instance, obvious engine power loss is likely due to an oxygen sensor issue, etc.