LG dishwashers are known for their efficiency and advanced features, but sometimes they can show obscure error codes that are easy to miss. One of these is error code nE, which is unusual because the dishwasher doesn’t stop mid-cycle. Instead, it continues running normally, but your dishes may come out dirty or spotted. Understanding this error, its causes, and how to fix it can help you restore your dishwasher’s full performance.

What Error nE Means

The nE error relates to the diverter mechanism, which controls how water is distributed to the spray arms. This system is powered by the Vario Motor and guided by a micro switch. Every 90 seconds, the diverter redirects water from one spray arm to the next (lower → middle → upper) to ensure complete cleaning.

The micro switch sends signals to the main control board to confirm the diverter’s position. When the board doesn’t receive these signals, the nE code appears. The result is uneven water flow and poorly washed dishes, even though the dishwasher finishes its cycle.

Common Causes of nE Error

Several issues can trigger nE:

• Temporary system glitch — sometimes the dishwasher just needs a brief power reset.
• Broken wiring — damaged or loose wires prevent the motor or micro switch from communicating with the control board.
• Vario Motor failure — a worn motor seal allows water to leak, causing infinite resistance and motor malfunction.
• Diverter micro switch defect — the switch cannot detect the diverter position, causing the board to report an error.
• Control board issues — damaged circuits or solder joints on the main board can prevent correct signaling.

DIY Solutions to Fix Error nE

Step 1: Reboot the Dishwasher

• Turn off the dishwasher and unplug it for 10–15 minutes.
• Plug it back in and run a cycle to see if the error disappears. Sometimes a simple reboot fixes temporary glitches.

Step 2: Inspect Wiring

• Switch off the dishwasher and check the harness going to the Vario Motor and diverter micro switch.
• Make sure connectors are firmly inserted and wires are intact.
• Look for visible breaks, corrosion, or pinched wires.

Step 3: Test and Replace the Vario Motor

• Disconnect the motor wires and measure resistance with a multimeter.
• Ideal reading: approximately 4000 Ω. Infinite resistance indicates a faulty motor.
• If replacement is needed: remove drain and inlet hoses, disconnect wires, pull out the dishwasher, remove the bottom panel, and install a new motor (part number 4681ED3001D).

Step 4: Check the Diverter Micro Switch

• Measure the micro switch resistance (part number 3W40025C).
• Piston inserted: infinite Ω, piston extended: 0 Ω.
• If both readings are the same, the switch is faulty and should be replaced.

Step 5: Examine the Main Control Board

• Inspect for damaged tracks or components related to the diverter system.
• If parts can’t be repaired, replace the control board (average cost ~$145).

Preventive Measures

• Avoid slamming the dishwasher door or moving heavy objects inside while running — impacts can damage the diverter.
• Inspect wiring and connectors periodically to ensure no looseness or wear.
• Run short maintenance cycles to check that spray arms and diverter rotate freely.
• Clean the dishwasher regularly to prevent debris from obstructing the diverter mechanism.

Quick Troubleshooting Checklist

• Power reset the dishwasher to rule out temporary glitches.
• Inspect all wiring to the Vario Motor and diverter switch.
• Measure motor and switch resistance to confirm functionality.
• Replace faulty parts as needed.
• Check control board connections and repair or replace if necessary.

Addressing the nE error promptly ensures even water distribution, spotless dishes, and extends the life of your LG dishwasher’s components. Following these preventive steps reduces the chance of recurring errors and keeps your appliance performing at its best.