Methods, devices, and systems of a sensor surface object detection system are provided. Output from sensors of a vehicle may be used to describe an environment around the vehicle. In the event that a sensor is obstructed by dirt, debris, or detritus the sensor may not sufficiently describe the environment for autonomous control operations. The sensor surface object detection system may receive output from the sensors of the vehicle to determine whether any of the sensors are obstructed. The determination may be made by comparing the output of one sensor to another, determining whether the output of a sensor is within a predetermined threshold, or comparing characteristics of multiple sensor outputs to one another. When a sensor is determined to be obstructed, the system may send a command to a cleaning system to automatically remove the obstruction.