When a diode is tested using a DMM set in diode test mode, and the reading indicates continuity in both directions:

Question

Quizplus · Accepted Answer

A diode should only allow current to flow in one direction, showing continuity in that direction and a high resistance (or no continuity) in the opposite direction. If a DMM shows continuity in both directions, it indicates that the diode is shorted, allowing current to flow freely in both directions, which is not normal behavior.

When a Diode Is Tested Using a DMM Set in Diode