A sensing module is provided. The sensing module includes a light source, unit pixels, a leakage current detector, and a pixel driving circuit. The light source outputs an optical signal. The unit pixels are connected to row lines and column lines, and sense the optical signal to generate a pixel signal. The leakage current detector compares an amplitude of the pixel signal generated by the unit pixels with a first reference voltage, in a state in which the light source is deactivated, to detect a unit pixel, among the unit pixels, in which a leakage current equal to or greater than a threshold value is generated. The pixel driving circuit deactivates the detected unit pixel in a state in which the light source is activated.