Jansen has received widespread criticism for her Facebook comments claiming rape is part of black culture.
The commission says the matter has been lodged with the judicial conduct committee, which will investigate whether Jansen contravened the code of judicial conduct.
It further says that it notes with concern the public outcry caused by the Facebook comments and that it will investigate whether Judge Jansen’s conduct was in line with the code of judicial conduct, which all judges should abide by.