Rcz Fault Light Gas Consumption Flickering

Hello, I bought a new RCZ vehicle with 127,000 km on it. While driving, the malfunction indicator light suddenly came on. Then, it stopped consuming gas. It was consuming very heavily. When I stopped and restarted it, it started consuming gas, but the malfunction indicator light remained. The fan was constantly running and running for a long time. When I took it to a repairman, he replaced the spark plug and solenoid valve, and the malfunction indicator light went out, but it did so again 50 km later. This time, when I turned it on and off, the malfunction indicator light went away. What is the cause of this problem? What should I do? It turns out there's an ignition problem in the device. The coil wasn't changed, but the spark plug was changed.

I have the same problem. I installed Eurorepar spark plugs and replaced one of the coils that OBD said was faulty, but the problem persists. What is the status of your vehicle? Did the steps you suggested fix the problem?