A method for correcting data from a sensor electrode in a sensor includes determining a potential difference (V) between the sensor electrode and another sensor electrode; from the potential difference (V), determining a by-pass current (Ic) between the sensor electrode and the another sensor electrode; and from the by-pass current (Ic) and a measured current (I) from the sensor electrode, determining a corrected current (J) for the sensor electrode; wherein determining a potential (V1) for the sensor electrode comprises multiplying an intrinsic impedance (Zi1) by the measured current (I). A computer program product and other embodiments are provided.