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Fault code guide

LG dishwasher error codes

LG dishwashers use short letter codes: IE for water in, OE for water out, and AE or FE for leaks and overfilling. Below is what each one means, and what to try before you book.

Checked against LG’s own guidance, October 2026

Before you check anything: switch the appliance off at the wall first. Never remove covers or panels from a machine that’s plugged in. If you smell burning, see scorching or the appliance trips your electrics, leave it switched off and get it looked at.

LG dishwashers

What each code means

Most LG dishwashers use these codes. Your manual has the final word for your exact model.

How to clean a dishwasher filter

  1. IE The water didn’t reach the right level within about 10 minutes of filling.

    Try this first
    • Check the supply valve to the dishwasher is open and your water isn’t off.
    • Straighten any kinks in the inlet hose.

    If water supply is fine, the inlet valve needs testing.

  2. OE The dishwasher couldn’t drain the tub fully.

    Try this first
    • Clean the filter (LG recommends every one to two weeks).
    • Straighten any bends in the drain hose.

    If it still won’t drain, the drain pump or hose needs checking.

  3. AEFEE1 A leak or overfill has been detected.

    Try this first
    • Use only dishwasher detergent, never washing-up liquid, which causes oversudsing.
    • Check the dishwasher is level and the door closes squarely.
    • Switch off and look for water under the machine.

    If it returns with the right detergent, the leak or inlet valve needs tracing.

  4. bE Too many bubbles in the tub.

    Try this first
    • Use dishwasher detergent only, not washing-up liquid.
    • Wipe out excess suds and run a short programme with nothing added.

    No repair is needed once the suds have cleared.

  5. nE A problem with the variable spray pump.

    Try this first
    • Rearrange the load so nothing touches the spray arms, then restart.

    If it continues, the pump needs inspecting.

  6. LE The wash motor isn’t working normally.

    Engineer if it returns
    • Switch off at the wall for a minute and restart.

    LG advises a service inspection for this code.

  7. HE The water isn’t being heated.

    Engineer if it returns
    • Switch off and restart once.

    The heater needs testing. LG advises a service inspection.

  8. tE A temperature sensor problem.

    Engineer if it returns
    • Switch off and restart once.

    The sensor or its connection needs inspecting.

  9. PE A water level sensor problem.

    Engineer if it returns
    • Switch off and restart once.

    LG advises a detailed inspection for this code.

  10. F31F35 A fault with the drying fan or drying temperature.

    Engineer if it returns
    • Switch off and restart once.

    The drying system needs inspecting.

  11. F37 A fault with the automatic door opening.

    Engineer if it returns
    • Check nothing is blocking the door, then restart.

    If it continues, the auto-open mechanism needs inspecting.

  12. CL Control lock is on, so the buttons won’t respond.

    Not a fault
    • Press and hold Half Load and Energy Saver together for three seconds (the buttons can vary by model).

    This isn’t a fault.

Code still showing? Dishwasher repairs across West London, £40 call-out including diagnosis.
Sources

Where this information comes from

Every code on this page has been checked against LG’s own support guidance. Codes can differ between models and years, so your manual has the final word. LDN Appliance Care is independent and not affiliated with LG.

Not sure?

Send us the code

Message us a photo of the display and the model number (usually on a label inside the door or around the door rim) and we’ll tell you what it points to and whether it’s likely to be worth repairing.

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