GE Dishwasher Error Code Lock LED

The Lock LED on a GE dishwasher illuminates to indicate that the appliance is currently in Diagnostic Code Display Mode. This is a normal status indicator, not a fault or error. It confirms that the control board is actively running in its special diagnostic state, which is used to read stored operational or fault codes.

When the Lock LED is illuminated because the dishwasher is in Diagnostic Code Display Mode, the unit is not in a normal operating state and should not be run as usual. Exit the diagnostic mode first, then confirm the dishwasher returns to normal operation before running a wash cycle.

In most cases there is no repair cost at all, since the Lock LED simply indicates Diagnostic Code Display Mode is active and exiting that mode requires no parts or service. If a stuck control panel button or faulty control board is found to be causing the issue, repair costs can range from around $50 to $250 or more depending on the specific component and whether professional service is needed.

Since the Lock LED is a mode indicator rather than a fault, the fix is simply to exit Diagnostic Code Display Mode using the appropriate button sequence for your model, or by cycling power to the dishwasher. If the light returns without you entering a diagnostic sequence, check for stuck control panel buttons or consider having the control board inspected.

Yes, cycling power to the dishwasher by turning off the circuit breaker for about 30 seconds and then restoring power will typically exit Diagnostic Code Display Mode and turn off the Lock LED. If the LED comes back on after a reset without any button input, further inspection of the control panel or control board may be needed.