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Error code reference

GE Dishwasher Error Code Lock LED

Always illuminated when in Diagnostic Code Display Mode to indicate the mode is active.

GE codesGE dishwasher codes

Always illuminated when in Diagnostic Code Display Mode to indicate the mode is active.

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What Lock LED means on a GE dishwasher

The Lock LED on a GE dishwasher illuminates as a status indicator rather than a fault or error condition. When the dishwasher enters Diagnostic Code Display Mode, the Lock LED lights up continuously to signal that the control system is actively operating in that special diagnostic state. This is an intentional, expected behavior built into the control board firmware to help technicians identify when the unit is in a non-standard operating mode.

Diagnostic Code Display Mode is accessed through a specific button sequence on the control panel and allows the dishwasher's control board to cycle through and display stored fault codes or operational status codes. The Lock LED serving as a mode indicator means there is no underlying component failure associated with this LED state on its own. The LED is driven directly by the main control board, which sets this output high as part of its diagnostic routine logic.

Because this is a mode indicator rather than a fault code, the Lock LED staying illuminated during diagnostics does not indicate a problem with the door latch, control lock circuit, or any other dishwasher subsystem. Once the technician exits Diagnostic Code Display Mode through the appropriate control sequence or by cycling power to the unit, the Lock LED will return to its normal operating behavior. If the Lock LED remains lit outside of a known diagnostic session, the control board may have entered the mode unintentionally due to a button input issue or a control board irregularity.

Source: manufacturer service documentation.

Common causes of Lock LED

  1. 01

    Diagnostic Mode Actively Engaged

    Wiring / connection

    The most common reason the Lock LED is illuminated is that someone has intentionally or accidentally triggered Diagnostic Code Display Mode through a button sequence on the control panel. Exiting this mode will clear the indicator.

  2. 02

    Unintentional Button Sequence Input

    Wiring / connection

    A specific sequence of button presses, even if entered accidentally, can activate Diagnostic Code Display Mode. Inspecting the control panel for stuck or repeatedly actuated buttons can help identify if this is the cause.

  3. 03

    Stuck or Faulty Control Panel Button

    Part replacement

    A button on the control panel that is physically stuck in the depressed position may cause the dishwasher to enter or remain in Diagnostic Mode. Inspecting each button for normal travel and release will confirm this issue.

  4. 04

    Control Board Firmware or Logic Irregularity

    Part replacement

    In rare cases, the main control board may enter Diagnostic Code Display Mode without a proper user input, potentially due to an internal logic issue. If power cycling and normal control sequences do not exit the mode, the control board may need evaluation.

See the test procedure for each cause

Frequently asked questions about Lock LED

What does Lock LED mean on a GE dishwasher?
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.
How do I fix the Lock LED light on my GE dishwasher?
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.
Is it safe to run my GE dishwasher when the Lock LED is on?
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.
Will resetting my GE dishwasher clear the Lock LED?
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.
How much does it cost to repair a GE dishwasher showing the Lock LED?
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.

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