Broughton Road, near Canonmills, is currently closed to traffic between East Claremont Street and Logie Green Road - according to the council-run Twitter account Edinburgh Traffic News.
Subsidence is a very specific issue that occurs when the ground collapses or sinks lower.
One Twitter user reportefd that a large pothole had appeared in the road at lunchtime on Sunday, and that cars were struggling to get past it.
The road is expected to remain closed to traffic for a prolonged period of time.
Edinburgh Council have been contacted for more information.
More to follow.