A pixel circuit is disclosed which includes a plurality of sub-pixel circuits each including: an organic light emitting diode having an anode; a driving transistor connected in series with the organic light emitting diode via the anode; and a sensing transistor having a first electrode connected to the anode, a gate connected to a first scan line, and a second electrode. The pixel circuit further includes a common transistor having a first electrode connected to the second electrodes of the sensing transistors of the plurality of sub-pixel circuits, a gate connected to the first scan line, and a second electrode connected to a sensing line. Also disclosed is a display apparatus including the pixel circuit and a method of driving the pixel circuit.