Assuming the fault is with the sensor having failed, and not the prism becoming un-bonded from the glass with age, you can do two things:

One unplug the 4 pin connector at the sensor and the wipers will revert to regular pause wipe.

Two release the two locking catches, fit a used sensor (be aware, there are two designs, the LED count is different and they are not compatible) and relearn the sensor to the screen using INPA.