When checking a diode with an ohmmeter, what is indicated by 2 high-resistance measurements?

When checking a diode with an ohmmeter and observing two high-resistance measurements, this indicates that the diode is open or has high forward resistance. A diode essentially functions as a one-way valve for electrical current, allowing it to flow in one direction while restricting it in the opposite direction.

In this scenario, high-resistance measurements in both the forward and reverse bias conditions could mean that the diode is not conducting current effectively. This could be due to an open circuit within the diode (the internal connections are broken) or due to an excessively high resistance that prevents current from flowing through it even in the intended conduction direction.

The other options would not accurately reflect the scenario. A malfunctioning diode might show inconsistent resistance values instead of two high readings. If the diode were functioning correctly, you'd expect to see low resistance in one direction (forward bias) and high resistance in the other direction (reverse bias). A shorted diode would display very low resistance in both directions, which contrasts with the high resistance indicated in this situation.