What does a high resistance reading in both forward and reverse bias directions indicate?

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Solution

Diodes are used to limit the voltage in circuits as well as to convert AC to DC.
The semiconductor diode is forward-biased when the voltage is applied such that the p-side is linked to the positive side of the battery and the n-side is connected to the negative side.
When a voltage is applied across a semiconductor diode, such that the positive side of the battery is connected to the n-side of the diode and the negative side of the battery is connected to the p-side of the diode, it is in reverse bias

In both bias conditions, a diode with a high resistance has no current flowing from one terminal to the other.
If there is no current flowing through the diode the circuit will act as an open circuit.

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