Elysee reported a fault code. What does the electronic throttle signal mean by short circuit to ground or permanent short circuit to positive pole?

The computer version has also been changed, and the throttle has also been changed, which is still useless. I went to many repair shops and couldn't find the reason! Some people say they want to change the whole railway line. Some say it's because of poor contact in that part of the car. Anyway, the problem can't be found. The algebra of the car is still high and low, either the car can't afford gas, or there is no algebra, and finally it is eager to sell the car itself. Holding the attitude that a dead horse is a living horse doctor, I unplugged the accelerator and then clamped it with pliers. As a result, the problem was solved