A monitoring method for operating a number of one or more drive devices, in particular for operating an internal combustion engine, wherein a drive device has a control device, and an operating parameter of the drive device is monitored on the basis of operating data for the operating parameter, acquired by means of the control device, comprising the following steps: - monitoring the operating parameters of the drive device with a monitoring algorithm for the operating data, - applying a fault detection algorithm to the acquired operating data of a fault detection to detect a fault concerning the operating parameter of the drive device, - sending a fault indication from the fault detection for the drive device, based on a result of the fault detection algorithm; - receiving the fault indication and checking the result, - activating a control connection to the drive device with respect to the operating parameter and feeding back a monitoring value for the operating parameter to a feedback connection to the monitoring algorithm, characterised in that the result is qualified as false-positive or true-positive after testing, and - the interference detection has a discrimination unit which - passes the result, qualified as a true-positive, to the control connection to a control element, and - passes the result, qualified as a false-positive, to the feedback connection to the observer module. operating data for the operating parameter, acquired by means of the control device, comprising the following steps: - monitoring the operating parameters of the drive device with a monitoring algorithm for the operating data, - applying a fault detection algorithm to the acquired operating data of a fault detection to detect a fault concerning the operating parameter of the drive device, - sending a fault indication from the fault detection for the drive device, based on a result of the fault detection algorithm; - receiving the fault indication and checking the result, - activating a control connection to the drive device with respect to the operating parameter and feeding back a monitoring value for the operating parameter to a feedback connection to the monitoring algorithm, characterised in that - monitoring the operating parameters of the drive device with a monitoring algorithm for the operating data, - applying a fault detection algorithm to the acquired operating data of a fault detection to detect a fault concerning the operating parameter of the drive device, - sending a fault indication from the fault detection for the drive device, based on a result of the fault detection algorithm; - receiving the fault indication and checking the result, - activating a control connection to the drive device with respect to the operating parameter and feeding back a monitoring value for the operating parameter to a feedback connection to the monitoring algorithm, characterised in that the result is qualified as false-positive or true-positive after testing, and - the interference detection has a discrimination unit which - passes the result, qualified as a true-positive, to the control connection to a control element, and - passes the result, qualified as a false-positive, to the feedback connection to the observer module. - the interference detection has a discrimination unit which - passes the result, qualified as a true-positive, to the control connection to a control element, and - passes the result, qualified as a false-positive, to the feedback connection to the observer module. <EOS>