In the present paper, results of computer simulation of cyclic voltammetry applied to electrocatalytic solid state sensor are presented. The computer software developed by D.Gosser is based on explicit finite difference method. The software is devoted for the simulation of cyclic voltammetry experiments in liquid electrochemistry. However the software is based on general electrochemical rules and may be used for simulation of experiments in solid state electrochemistry. The electrocatalytic sensor does not have a reference electrode and therefore it is necessary to employ virtual reference electrode into the model of the sensor. Data obtained from simulation are similar to measurement one what confirms correctness of assumed sensing mechanism.