2022 Mai Rui Bao 3000 km solar terms fault light is on. What happened? The 4s shop needs to be replaced.

2022 Mai Rui Bao 3000 km solar terms fault light is on:

1, because the throttle is dirty, the mixture is too rich.

2. The engine has too much carbon deposit, which leads to unqualified exhaust emission. Is there any reason for too much carbon deposition, such as regular maintenance or poor oil quality?

3. When the engine oxygen sensor fails, it will also cause the throttle fault light to light up.