To provide the learning method of the throttle opening sensor output characteristics of a hybrid vehicle, which can prevent the deterioration of the temperature characteristic of a throttle opening sensor and the wear and vibration and the control accuracy by the aging deterioration by a temperature cycle and realize a highly accurate throttle control.

In this learning method of the throttle opening sensor output characteristics of a hybrid vehicle, the characteristics showing the correspondence between the output value of a throttle opening sensor and the throttle opening is corrected by the throttle opening sensor output value, when the throttle valve 103 is moved to a full open position at the engine stop time and the throttle opening sensor output value, when the throttle valve 103 stays at a fully close position.