Method for operating broadband lambda sensor for determining composition of exhaust gas in internal combustion engine of motor vehicle, involves controlling temperature of sensor by measuring internal resistance and/or heat flow of sensor

The method involves heating a gas sensor (100) at a target temperature (T2), which is greater than activation temperature and less than a thermal shock temperature, up to a dew point end. Temperature of the sensor is determined and controlled by direct temperature measurement or indirect temperature measurement by measuring internal resistance of the sensor and/or heat flow of the sensor. Monitoring of the temperature sensor is triggered by a start signal that is provided depending upon internal resistance of the sensor that is made of ceramic material. Independent claims are also included for the following: (1) a computer program for performing a method for operating a sensor for determining composition of exhaust gas in an internal combustion engine of a motor vehicle (2) a computer program product with a computer program for performing a method for operating a sensor for determining composition of exhaust gas in an internal combustion engine of a motor vehicle. Ein Verfahren zum Betreiben eines Sensors (100), insbesondere eines Sensors aus einem keramischen Material, ist dadurch gekennzeichnet, dass der Sensor (100) bis zum Erreichen des Taupunktendes auf eine Ziel-Temperatur (T2) aufgeheizt wird, die größer als eine Aktivierungstemperatur (T1) und kleiner als eine Thermoschocktemperatur (T2) ist.