What is the problem that Sonata 8 throttle can't refuel?

Hello, according to the problem you described and our experience in vehicle maintenance, this situation should be a fault of the engine electronic control system. I suggest you use the decoder to read the fault code, and then start the maintenance according to the information prompted by the fault code! If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.