It is described a method for determining a blockage of a sensor of a plurality of sensors of an ego vehicle, the method comprising: determining an prior blockage probability of the sensor of the plurality of sensors; receiving sensor data of the sensor of the plurality of sensors; determining a performance of the sensor based on the received sensor data; calculating an posterior blockage probability based on the prior blockage probability of the sensor and the performance of the sensor; and determining the blockage of the sensors using the calculated posterior blockage probability.