LG Dishwasher Error Code
The dishwasher cannot drain within the required time. Clean the triple filter system (mesh filter, coarse filter, micro filter — all located in the bottom of the tub), check the drain hose connection at the garbage disposal or air gap, and inspect for hose kinks.
Note the exact error code and any symptoms (sounds, smells, leaks)
Try power cycling the appliance (unplug for 60 seconds)
Check our diagnosis steps below
If code persists, call a certified technician
The dishwasher cannot drain within the required time. Clean the triple filter system (mesh filter, coarse filter, micro filter — all located in the bottom of the tub), check the drain hose connection at the garbage disposal or air gap, and inspect for hose kinks.
When your LG Dishwasher displays the OE code, it means the appliance's self-diagnostic system has detected a fault that requires attention. LG's smart diagnosis system is designed to surface this error only when the condition is confirmed — meaning a single power cycle that clears the code is not a reliable fix if the underlying cause has not been addressed.
Based on our technicians' experience servicing LG Dishwashers, the OE code is most frequently triggered by the following:
Before scheduling a service call, work through the following steps in order. These checks resolve the OE error in a meaningful percentage of cases when the cause is a minor blockage or transient fault rather than a failed component.
If the OE code returns after completing the steps above, a component has likely failed and the repair requires disassembly, professional diagnosis, and genuine LG OEM parts. Continuing to run the appliance with an active fault may cause secondary damage — for example, a failing drain pump that is not replaced can overheat and damage the motor or control board.
LG Appliance Experts technicians carry the most common replacement parts for LG Dishwashers on every service vehicle. In most cases, we can diagnose and complete the repair in a single visit.
Repair costs for the OE error vary depending on which component has failed. Typical ranges based on our service history:
All repairs include a 90-day parts and labor warranty. A written estimate is provided before any work begins.
Our certified LG technicians diagnose OE errors on the first visit.
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View service →Complete list of LG Dishwasher error codes with diagnosis guides.
| Code | Meaning | Severity | Common Symptom |
|---|---|---|---|
| AE | AE – Leak Detected | Medium | The overflow float sensor in the base pan has detected water beneath… |
| bE | bE – Control Panel Button Error | Medium | A button on the control panel is stuck or shorted. The dishwasher… |
| FE | FE – Overflow Error | Medium | The dishwasher has overfilled. The water inlet valve is not closing properly.… |
| HE | HE – Heater Error | Medium | The heating element or NTC thermistor has failed. Dishes will not dry… |
| IE | IE – Water Inlet Error | Medium | The dishwasher did not fill to the required level within the allotted… |
| LE | LE – Wash Motor Error | Medium | The QuadWash pump motor is drawing too much current or has stalled.… |
| nE | nE – Diverter Motor Error | Medium | The diverter motor (which routes water to different spray levels in QuadWash… |
| tE | tE – Thermistor Error | Medium | The water temperature NTC thermistor is faulty. The dishwasher cannot verify water… |
Answers to the most common questions our customers ask.
The most common culprits are clogged QuadWash spray arm jets, a failing wash pump motor, low water temperature (should be 120°F at the inlet), or hard water mineral buildup. We clean and test all four spray arms and verify water pressure and temperature on every LG dishwasher service call.
AE (or LE on some models) means a water leak has been detected in the base pan by the float sensor. The unit will drain and stop to prevent flooding. Do not run the dishwasher. A door gasket tear, a cracked spray arm, or a loose pump connection is usually the cause.
White residue is typically hard water mineral deposits or a failing rinse-aid dispenser. Ensure the rinse-aid reservoir is filled. If you have very hard water, a water softener or citric acid cleaning cycle can help. If the dispenser itself is broken, it's a straightforward part replacement.
Standing water after a cycle typically means a clogged mesh filter (clean monthly), a blocked drain hose connection at the garbage disposal or air gap, or a failed drain pump. LG recommends cleaning the triple filter system monthly to prevent drain issues.
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