IE
LG Dishwasher
Severity: ModerateWhat Does This Error Mean?
The IE error means your LG dishwasher is not getting enough water. The tub did not fill to the proper level within the allowed time. This is usually a water supply issue, not a dishwasher problem.
Affected Models
- LDF5545ST
- LDT7808ST
- LDFN4542S
- Most LG dishwashers with digital displays
Common Causes
- Water supply valve under the sink is turned off or only partially open
- Kinked or pinched water inlet hose
- Clogged inlet valve screen or filter
- Faulty water inlet valve not opening properly
- Low home water pressure (below 20 psi)
How to Fix It
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Check the water supply valve under the sink and make sure it is fully open.
Turn it counterclockwise to open. Sometimes it gets accidentally bumped closed.
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Inspect the water inlet hose for kinks or tight bends.
Straighten the hose if needed. Replace it if it looks damaged or cracked.
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Clean the inlet valve screen where the hose connects to the dishwasher.
Turn off the water supply first. Remove the hose and check for debris on the small screen.
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Verify your home water pressure is at least 20 psi.
Try running the kitchen faucet. If the flow is weak, the issue may be house-wide.
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Press the power button to reset the dishwasher and start a new cycle.
If the IE error returns, the water inlet valve likely needs replacement.
When to Call a Professional
If the water supply is fully on and the hose is clear, the inlet valve itself may be defective. A licensed technician can test the valve with a multimeter. Expect repair costs of $100–$200 for an inlet valve replacement.
Frequently Asked Questions
Can I still use my LG dishwasher with the IE error?
No — the dishwasher needs water to wash dishes. Without enough water the cycle will not start. Fix the water supply issue first before running it again.
How do I check the water inlet valve screen?
Turn off the water supply under the sink. Disconnect the water hose from the back of the dishwasher. Look for a small mesh screen inside the valve opening. Clean it with an old toothbrush under running water.
Could low water pressure cause the IE error?
Yes — LG dishwashers need at least 20 psi of water pressure. If other faucets in your home also have weak flow, contact your water company. A plumber can install a pressure booster if needed.