A method for managing the sporadic anomalies of a power system of a motor vehicle, the system including a computer and a set of sensors. The computer including a memory area capable of receiving measurements made by the set of sensors and detecting anomalies on the basis of the measurements received, the anomalies of the system being defined in a predetermined list of sporadic anomalies at a given instant. The method including: detecting an anomaly; measuring the duration of the detected anomaly; if the measured duration is less than a predetermined duration threshold, and if the detected anomaly is present in the predetermined list of sporadic anomalies at the current instant, incrementing an occurrence counter; and if the value of the occurrence counter is greater than a predetermined occurrence threshold, confirming the detected anomaly as a sporadic anomaly.