My engine malfunction light and regeneration indicator are both on, and it says that the exhaust emissions are too high. The decoder can't access the system either. What should I do about this?

I don't even bother with that light, it's a common issue with this car. It's just that owners of this car don't like going on forums. It lights up from time to time, and I just go to the service center to get it cleared before each inspection.

Professional Maintenance for China VI Emission Standards

Sure, I can explain it to you so you can analyze it. 😊

No matter what you do, it won't get better unless you replace the engine.

Add urea?

I had the same issue, even changed the yGr valve but still didn't fix it. Tried all sorts of cleaning methods. Finally, I discovered the tank in front was cracked. The parts at the dealership were super expensive, so I ended up getting it fixed elsewhere.