LG Dishwasher OE Error Code: Clogged Garbage Disposal... | appliancefaults.com

Technical Background:

The 'OE' error code on an LG dishwasher indicates a drainage issue. The Main Control Unit (MCU) monitors the water level and drain pump activity. If the MCU detects that the water is not draining within a specified timeframe, it triggers the 'OE' error. This is typically a low voltage DC circuit reporting back to the MCU. When the drain float switch is activated, a signal voltage is sent to the MCU, and if this process is interrupted, the error code appears.

Symptoms:

The homeowner observes that the LG dishwasher displays an 'OE' error code on the control panel and the dishwasher is not draining water properly. There might be standing water in the bottom of the dishwasher after a cycle.

Possible Causes:

Clogged drain hose
Clogged drain pump filter
Blocked garbage disposal connection
Failed drain pump
Kinked drain hose
Control board malfunction

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Check the drain hose connection to the garbage disposal. Ensure the knockout plug in the disposal has been removed.
3

Inspect the drain hose for kinks or obstructions. Disconnect the hose and flush it with hot water.
4

Remove and clean the drain pump filter located inside the dishwasher tub, usually at the bottom.
5

Test the drain pump for continuity using a multimeter. It should read approximately 10-20 ohms.
6

If the drain pump is faulty, replace it. Ensure the new pump is the correct replacement part.
7

Reassemble all components and restore power. Run a test cycle to confirm the OE error is resolved.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. Follow Lock Out/Tag Out (LOTO) procedures to prevent accidental re-energization. Be aware of potential sharp edges and electrical hazards.

Prevention:

Run the garbage disposal regularly to prevent food buildup. Periodically check and clean the dishwasher drain pump filter. Use a dishwasher cleaner monthly to prevent clogs.

Expert Tip:

To quickly clear a minor clog, try pouring a cup of baking soda followed by a cup of vinegar into the dishwasher drain. Let it sit for 30 minutes, then flush with hot water. Some LG dishwashers also have a service mode, accessible by pressing a specific button combination (check the service manual for your model), which includes a drain cycle for diagnostic purposes.

Frequently Asked Questions

•How do I access the drain pump on my LG dishwasher?

Typically, you can access the drain pump by removing the lower spray arm and filter assembly inside the dishwasher tub. The pump is usually located underneath and may require removing a few screws or clips to detach.

•What is the resistance range I should expect on a good LG dishwasher drain pump?

A typical LG dishwasher drain pump should measure between 10 and 20 ohms when tested with a multimeter. An open circuit or a very low resistance indicates a faulty pump.

•Could a faulty water inlet valve cause an OE error?

While the OE error specifically points to a drainage issue, a severely malfunctioning water inlet valve could indirectly contribute by overfilling the dishwasher, eventually triggering the OE error as the system struggles to drain the excess water.

LG Dishwasher OE Error Code: Clogged Garbage Disposal Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the drain pump on my LG dishwasher?

•What is the resistance range I should expect on a good LG dishwasher drain pump?

•Could a faulty water inlet valve cause an OE error?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: