Is the slow return of throttle valve a fault of throttle position sensor?

The slow return of the throttle is caused by the fault of the throttle position sensor. Because the throttle position sensor is a signal to detect the throttle opening. The engine computer adjusts the fuel injection quantity and ignition time according to the throttle opening! If the throttle valve is damaged, the engine computer can't receive the signal of throttle opening correctly, which leads to the inability to accurately adjust the fuel injection quantity and ignition time.