Moving into a house previously lived in by a Jew who did not keep kosher. Treif working dishwasher. Can it be Kashered?
The standard approach is to be stringent and not Kasher a dishwasher due to the various concerns, primarily because it is not likely that the hot water cycle will reach 212 Fahrenheit, which is the boiling point to do Hagalah.
ראה הנסמן בשאלה 468.