LG Dishwasher Error Code 3E

The 3E code indicates a circulation pump motor error. The inverter control system detected a fault with the pump motor three separate times, causing the system to shut the motor off and enter a rest period. When the fault is still present during the third rest interval, the 3E code is displayed and the cycle stops.

A reset may clear the code temporarily, but the 3E error will return if the underlying cause has not been resolved. Because the fault requires the inverter to detect a motor check condition three consecutive times before triggering, a reset without fixing the root cause will typically result in the same error appearing again within the next wash cycle.

Repair costs vary depending on the cause. If the problem is a simple blockage, the repair may cost nothing beyond your time. A replacement circulation pump motor typically costs between $80 and $200 for parts, with labor adding $100 to $200 if a technician is needed. An inverter control board replacement can range from $150 to $350 or more for parts alone.

Start by checking the circulation hose and pump housing for any foreign material such as glass shards, food debris, or small objects blocking the impeller. Clear any obstructions found and run a test cycle. If the error returns, the issue may be a failed pump motor, a wiring fault, or a defective inverter board, which may require further electrical diagnosis or part replacement.

No, you should not continue running the dishwasher while the 3E error is active. The code indicates the circulation pump motor has been shut down, meaning the appliance is not washing dishes effectively. Continued attempts to run the unit without resolving the fault could cause additional stress to the pump motor or the inverter board.