LG Dishwasher IE Error: Water Inlet Troubleshooting

The IE error code on LG dishwashers indicates a water inlet failure—the dishwasher has attempted to fill with water but didn’t reach the required level within the programmed time (30 seconds to 10 minutes depending on cycle). This error prevents the cycle from starting or continuing.

Important: LG specifically warns that “Flood Safe” type inlet hoses are not compatible with their dishwashers and can cause IE errors. These hoses have built-in shutoff mechanisms that may prevent adequate water flow.

What the IE Error Code Means

When your LG dishwasher displays IE:

• Water isn’t entering the dishwasher, OR
• Water is entering too slowly to fill in time
• The cycle has stopped to prevent damage
• The water level sensor hasn’t detected adequate water

Model Coverage

This guide applies to LG dishwashers displaying the IE error:

• LG front-control dishwashers: LDF5545, LDF7774 series
• LG top-control dishwashers: LDT5678, LDT7808 series
• QuadWash models
• Models manufactured 2016-2024

Common Causes

1. Water supply valve closed or partially closed (most common)
2. Kinked water inlet hose
3. Clogged inlet filter screen
4. Low household water pressure (must be 20-120 PSI)
5. “Flood Safe” type hose installed (not compatible with LG dishwashers)
6. Water inlet valve failure

Step-by-Step Fix

Step 1: Check the Water Supply Valve

The supply valve is usually under the kitchen sink:

1. Open the cabinet under the sink
2. Locate the dishwasher water supply line (typically a braided hose)
3. Follow it to the shutoff valve
4. Turn the valve fully counterclockwise (open position)
5. If it’s already open, close it fully, wait 10 seconds, then reopen

Step 2: Inspect the Inlet Hose

Check the hose that supplies water to the dishwasher:

1. The hose runs from the supply valve to the dishwasher inlet (usually bottom left)
2. Look for kinks, twists, or sharp bends
3. Ensure the hose isn’t pinched by the dishwasher or cabinets
4. Straighten any kinks

Step 3: Clean the Inlet Filter Screen

A small filter screens debris from the water supply:

1. Turn off the water supply valve
2. Pull the dishwasher out enough to access the inlet connection
3. Place towels under the connection
4. Disconnect the water supply hose from the dishwasher inlet
5. Look inside the inlet—you’ll see a small mesh screen
6. Remove the screen with needle-nose pliers
7. Clean under running water, using a soft brush
8. Reinstall the screen
9. Reconnect the hose and turn on the water
10. Check for leaks

Step 4: Test Water Pressure

To verify adequate water pressure:

1. Turn off the supply valve
2. Disconnect the hose from the dishwasher inlet
3. Hold the hose over a bucket
4. Briefly open the supply valve
5. Water should flow strongly—weak flow indicates low pressure
6. Check if other fixtures have similar low pressure

Step 5: Power Reset

After physical checks:

1. Turn off the dishwasher
2. Turn off the circuit breaker or unplug
3. Wait 5 minutes
4. Restore power
5. Run a test cycle

Checking the Water Inlet Valve

If all supply-side checks are good, the inlet valve may be faulty:

Signs of Inlet Valve Failure

• You hear a click when the cycle starts, but no water enters
• The valve makes a humming sound but no water flows
• Water enters very slowly despite good supply pressure
• Intermittent IE errors with good water supply

Testing the Inlet Valve

Testing requires removing the lower access panel:

1. Unplug the dishwasher
2. Remove the lower access panel
3. Locate the inlet valve (where the supply hose connects)
4. Check wire connections to the valve solenoid
5. A multimeter can test the solenoid coil resistance

Professional service is recommended for inlet valve testing and replacement.

Tools Needed

• Adjustable pliers
• Needle-nose pliers
• Towels
• Bucket
• Flashlight
• Soft brush

Safety Warnings

• Always turn off the water supply before disconnecting hoses
• Have towels ready—water will drain from disconnected hoses
• Don’t overtighten hose connections—hand-tight plus slight turn
• Unplug before accessing internal components

When to Call a Tech

Contact a professional if:

• Water supply checks out fine but IE persists
• The inlet valve clicks but no water enters
• You’re not comfortable pulling out the dishwasher
• The inlet valve needs replacement

Inlet valve replacement is a moderate repair requiring access to the bottom of the dishwasher.

Sources

For official LG support:

• LG Dishwasher No Water - IE Error Code
• LG Dishwasher IE Error

Related Guides

• LG Dishwasher Error Codes Explained
• OE Error: Drain Problems Solved
• AE Error: Leak Sensor Triggered