P0 122 What should I do if the throttle potentiometer signal is too small?

P0 122 If the throttle potentiometer signal is too small, find the needle. The two conductive pins are empty contacts and ground, and there is resistance between the three wires. Connect the power supply and ground to the maximum, and the rotation sensor becomes a signal line. The rotation sensor will test whether the resistance is normal and whether the resistance changes continuously. Throttle is the door that controls the air entering and leaving the engine. When the external gas enters the engine, it will mix with gasoline to form a combustible mixture. The upper end of the throttle valve is connected with the air filter, and the lower end is connected with the automobile engine body. After the combustible mixture is produced, it will enter the engine through the transmission pipe, thus triggering the power system of the engine.