What Does Error Code AE Mean on an LG Washing Machine?

LG Updated 28 March 2026
Quick Fix

Power cycle the machine by switching it off at the wall socket, waiting 60 seconds, then switching it back on and starting a new cycle — this clears temporary communication glitches in the majority of AE cases (takes about 5 minutes).

Fault description

Error code AE is an electronic communication fault. It means the main control board (PCB) and the sub-board — which handles functions such as the display, button inputs, or secondary control signals — have lost the ability to talk to each other reliably. When this breakdown occurs, the washing machine cannot confirm that its components are responding correctly, so it stops and displays the AE code to prevent further operation.

You may notice the machine halting mid-cycle, refusing to start, or showing the error immediately after powering on. The drum may not spin, and the display could flicker or become unresponsive. This fault affects a range of LG models including the F1056MD, F1068LD Series, F1073TD, and F1096QDA Series, among others.

In many cases the fault is caused by a temporary electrical disruption rather than a failed component, which means a straightforward reset is often all that is needed. However, if the error returns repeatedly, a physical or electronic fault is likely and will need closer investigation.

Causes

  • Temporary communication glitch — A brief power surge, voltage fluctuation, or software hiccup can cause the main PCB and sub-board to lose sync. This is the most common cause and usually clears after a full power cycle.
  • Loose or damaged wiring harness — The ribbon cable or wiring loom connecting the main PCB to the sub-board can work loose over time due to vibration during spin cycles. A partially disconnected or damaged connector interrupts the communication signal.
  • Faulty sub-board — The sub-board itself can fail due to component wear, moisture ingress, or a manufacturing defect. When the sub-board cannot send or receive signals correctly, the main PCB registers an AE fault.
  • Faulty main PCB — Less commonly, the main control board is the source of the problem. Burnt components, failed capacitors, or corrupted firmware can prevent it from maintaining a stable communication link with the sub-board.
  • Moisture or corrosion on connectors — Condensation or a minor water leak inside the machine can cause corrosion on the connector pins between the two boards. Even light oxidation on a connector can be enough to disrupt the low-voltage communication signal.

Step-by-Step Fix

  1. 1

    Power cycle the washing machine

    Turn the machine off using the power button, then switch it off at the wall socket. Leave it unplugged for at least 60 seconds to allow the control boards to fully discharge. Plug it back in, power it on, and attempt to start a cycle. This resolves temporary communication errors in a significant number of cases.

  2. 2

    Check for error recurrence

    Run a short wash cycle and observe whether the AE code returns. If the machine completes the cycle without fault, the issue was a temporary glitch. If the error reappears within the same cycle or on the next attempt, continue to the steps below.

  3. 3

    Inspect the door and control panel for obvious damage

    Look at the control panel buttons and display for any signs of physical damage, water staining, or buttons that feel stuck. Damage to the panel can affect the sub-board directly behind it. Do not press on cracked or wet panels — switch the machine off first.

  4. 4

    Check the wiring harness connections

    Switch off and unplug the machine before opening any panels. Remove the top panel (usually secured by two screws at the rear) to access the internal wiring. Locate the ribbon cable or wiring loom running between the main PCB and the sub-board and check that both ends are firmly seated in their connectors. Press each connector in firmly until it clicks. Look for any visible signs of burning, fraying, or corrosion on the pins.

  5. 5

    Clean corroded connector pins

    If you can see light oxidation or discolouration on the connector pins, disconnect the connector carefully and clean the pins using a dry cotton swab or a small amount of electrical contact cleaner. Allow the connector to dry completely before reconnecting. Do not use water or general-purpose sprays.

  6. 6

    Test the machine again

    Reassemble any panels you removed, plug the machine back in, and run a full cycle. If the AE code does not return, the loose or corroded connection was the cause. If the error persists after reseating all connectors, the sub-board or main PCB is likely faulty and will need to be tested or replaced.

  7. 7

    Replace the sub-board or main PCB

    If all connections are secure and the error continues, one of the two boards has failed. The sub-board is the more commonly replaced component for AE faults. Source a compatible replacement part using your full model number (found on the label inside the door frame) and follow the replacement procedure carefully, or contact a service technician to carry out the repair.

Affected models

When to call a service technician

Contact a service technician if the AE error returns immediately after every power cycle, if you can see burnt marks, melted plastic, or a burning smell near the control boards, or if the display is completely unresponsive. These symptoms suggest a board-level failure that requires proper diagnostic equipment to identify whether the main PCB, the sub-board, or both need replacing.

You should also seek professional help if you are uncomfortable removing internal panels or handling electronic components. Incorrect reassembly of wiring harnesses can cause additional faults, and working near live components without proper precautions carries a safety risk.

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Frequently Asked Questions

Is error code AE dangerous to ignore on an LG washing machine?

The machine will not operate while the AE code is active, so there is no immediate safety risk from the fault itself. However, you should not attempt to bypass the error or force the machine to run, as the underlying cause — such as a failing PCB — could worsen if left unaddressed. Investigate the fault promptly to avoid more costly repairs later.

How long does it take to fix an LG AE error?

A power cycle takes around five minutes and resolves the fault in many cases. If the issue is a loose wiring connector, allow 30 to 60 minutes to safely access and reseat the connections. A full board replacement, if needed, typically takes one to two hours depending on your experience level, or can be completed in a single visit by a service technician.

Can I still use my LG washing machine if it shows AE intermittently?

If the error only appears occasionally and clears with a power cycle, the machine may still complete some cycles. However, intermittent faults tend to become permanent over time, and running the machine with a known communication fault risks the cycle stopping mid-wash. It is better to investigate and resolve the root cause before relying on the machine for regular use.

Will a software update fix the AE error on my LG washing machine?

LG does not typically offer user-installable firmware updates for washing machines in the way smartphones receive them. If a firmware issue is suspected, a service technician can connect diagnostic equipment to check and update the board software. In most AE cases, however, the fault is hardware-related rather than a software bug.

Which LG washing machine models are affected by error code AE?

Error code AE has been documented across several LG models including the F0712WS, F0812WS, F1056MD, F1056ND, F1056QD Series, F1056QP, F1068LD Series, F1068QD Series, F1073TD, F1091TD Series, F1096Q/TDW1, and F1096QDA Series. If your model is not listed, check your user manual — the AE code definition is consistent across LG's range for this type of communication fault.