Method for detecting an open circuit failure in an electric circuit the electric circuit being configured for driving a current through at least one load resistance in a first state and for isolating the at least one load resistance in a second state, the electric circuit comprising at least: - at least one first switching unit connecting a first terminal of the at least one load resistance and a first port of the electric circuit, which has a first electric potential, and - at least one second switching unit connecting a second terminal of the at least one load resistance and a second port of the electric circuit, which has a second electric potential, which is different from the first electric potential, wherein the at least one first switching unit is configured at least for switching a current flowing through the at least one first switching unit, and wherein the at least one second switching unit is configured at least for switching a current flowing through the at least one second switching unit, characterized in that the electric circuit comprises at least one auxiliary resistance comprised within a bypass line that bypasses the at least one load resistance and the at least one second switching unit, and in that the method comprises at least monitoring a monitored current, which is the current flowing through the at least one first switching unit, wherein an open circuit failure is detected by a deviation of the monitored current from an expected value, wherein the method further comprises performing a diagnostics sequence, wherein the diagnostics sequence comprises at least the following steps: A) switching the at least one first switching unit, B) switching the at least one second switching unit, C) from a first point of time until a second point of time, detecting the monitored current with the at least one first switching unit being in its on state and the at least one second switching unit being in its off state, wherein the diagnostics sequence is followed by a regular operation of the electric circuit. - at least one first switching unit connecting a first terminal of the at least one load resistance and a first port of the electric circuit, which has a first electric potential, and - at least one second switching unit connecting a second terminal of the at least one load resistance and a second port of the electric circuit, which has a second electric potential, which is different from the first electric potential, wherein the at least one first switching unit is configured at least for switching a current flowing through the at least one first switching unit, and wherein the at least one second switching unit is configured at least for switching a current flowing through the at least one second switching unit, characterized in that the electric circuit comprises at least one auxiliary resistance comprised within a bypass line that bypasses the at least one load resistance and the at least one second switching unit, and in that the method comprises at least monitoring a monitored current, which is the current flowing through the at least one first switching unit, wherein an open circuit failure is detected by a deviation of the monitored current from an expected value, wherein the method further comprises performing a diagnostics sequence, wherein the diagnostics sequence comprises at least the following steps: A) switching the at least one first switching unit, B) switching the at least one second switching unit, C) from a first point of time until a second point of time, detecting the monitored current with the at least one first switching unit being in its on state and the at least one second switching unit being in its off state, A) switching the at least one first switching unit, B) switching the at least one second switching unit, C) from a first point of time until a second point of time, detecting the monitored current with the at least one first switching unit being in its on state and the at least one second switching unit being in its off state, wherein the diagnostics sequence is followed by a regular operation of the electric circuit.