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ErrBase

Lg Dishwasher Not Cleaning Dishes: Causes and Fixes

Quick Answer

LG dishwashers use a Direct Drive motor for the wash pump which provides more consistent water pressure than belt-driven pumps. LG's TrueSteam feature pre-steams dishes before the wash cycle for better cleaning.

LG dishwashers use a Direct Drive motor for the wash pump which provides more consistent water pressure than belt-driven pumps. LG's TrueSteam feature pre-steams dishes before the wash cycle for better cleaning. If TrueSteam is not activating (no steam visible during first few minutes), the steam generator may have scale buildup. Descale with citric acid.

LgDishwasherSeverity: mediumDifficulty: intermediate75% DIY Success
Time to Fix
15–90 min
Difficulty
intermediate
Parts Cost
—
Tools Needed
Multimeter, Screwdriver set

What Does the NOT-CLEANING Code Mean?

Lg dishwasher not cleaning dishes - see the detailed diagnosis steps below for Lg-specific causes and fixes.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Component failure in the LG dishwasher40%
Sensor or thermostat out of operating range24%
Control board fault14%
Power or electrical supply issue12%
Mechanical wear requiring inspection10%

Symptoms You May Notice

  • Not Cleaning Dishes on Lg dishwasher
  • Performance degradation
  • Unusual sounds or behavior
  • Error code may appear

Can you reset a Lg dishwasher to clear the NOT-CLEANING code?

Unplug for 60 seconds. Some Lg models have specific reset sequences - check the diagnostic mode entry above.

Tools Required for Diagnosis

MultimeterScrewdriver setFlashlight

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

1

Check the most common Lg-specific cause for not cleaning dishes

Check the most common Lg-specific cause for not cleaning dishes on Lg dishwashers. See the detailed guide above.

2

Check secondary causes common across all dishwasher brands but

3

If basic checks do not reveal the cause, run the brand

Frequently Asked Questions

How much does it cost to fix a Lg dishwasher not cleaning dishes?
Most Lg dishwasher not cleaning dishes repairs cost $100-400 depending on the cause. Simple fixes (cleaning, resetting) are free. Part replacements range from $10-200 plus $100-200 labor.
Is it worth repairing a Lg dishwasher not cleaning dishes?
If the dishwasher is under 8 years old and the repair is under 50% of replacement cost, repair is worthwhile. Lg extended the Linear Compressor warranty to 10 years on refrigerators.
Can I fix Lg dishwasher not cleaning dishes myself?
Many Lg dishwasher issues are DIY-fixable with basic tools. Water-related repairs may require turning off the water supply.

Same Fix Works on These Brands

Lg shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

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Models Known to Experience NOT-CLEANING Errors

This repair applies to most Lg dishwashers with this error code. Common model numbers include:

LDFN4542S, LDP6810SS, LDT7808SS

Last verified for technical accuracy on March 15, 2026