LG Washer 1E Error Code: Meaning, Causes & Fix

Inlet error — the washer is not filling (1E is the segmented-display rendering of IE).

1E and IE are the same LG fault: the washer called for water and the fill did not register in time. Some displays render the code as 1E, others as IE; owners search both. The diagnosis is the fill chain — taps, hoses, inlet screens, inlet valve, level sensor. Two LG-documented branches of this code are worth separating, because owners usually check only one of them. The first is the supply branch LG's IE page leads with: water cut off, the faucet turned off or the hose not connected, a hose pressed or bent (LG notes that vibration can walk the machine slightly and bend a hose that was straight at installation), a hose or pipe frozen in cold weather, and the inlet filter clogged with rust, sand or stones. The second branch is quieter and catches people out: on a front-loader, LG's front-load IE guide adds that the drain hose may be positioned too low, so water drains out as fast as the washer fills, or the end of the drain hose may sit submerged, with the same result. A washer on that branch has a healthy supply and a healthy valve — the fill is arriving and leaving at once — and it will show IE until the drain hose is lifted and its holder snapped back into place. Which branch you are on is decided by watching a fill: water audibly entering and the level never rising is the drain branch; silence at the inlet is the supply branch.

What causes the 1E code on a LG washer?

Taps/hoses restricting flow

Closed taps, kinked or frozen hoses.

Blocked inlet screens

Sediment build-up at the valve filters.

Inlet valve failure

Dead solenoid or stuck valve.

Level sensing fault

Sensor or its air hose misreporting fill.

A frozen supply (the winter 1E)

LG lists freezing as its own IE cause, for the pipe, the faucet or the supply hose. Its signature is seasonal and total: a washer that filled normally in autumn shows 1E on the first hard frost, and a nearby tap may still run while the washer's branch line is frozen. LG's thaw method is specific — disconnect the hose, open the faucet to test whether water comes out, wrap a towel soaked in hot water around a frozen faucet for about five minutes, and thaw the disconnected hose in warm water of 50°C (122°F) or lower before reconnecting it.

Water leaving as fast as it arrives

LG's front-load guide documents the siphon branch directly: a drain hose positioned too low lets water drain out while the washer fills, and a drain-hose end submerged in water does the same. The fill then never reaches the level the control expects inside its time window, and IE is the honest report of a plumbing geometry problem, not a valve problem.

An interrupted or partly closed house supply

LG's cause list starts with supply states owners forget they created: a faucet closed for plumbing work and reopened only part-way, a supply interrupted by the utility, or a hose never reconnected after a move. A 1E that begins the day after any plumbing work in the house belongs to this branch until proven otherwise.

Checks to run before you replace anything

1. Taps fully open; hoses unkinked.
2. Clean the valve inlet screens.
3. Bucket-test the taps to prove house flow.
4. Work LG's filter order, not around it: faucet off first, then separate the hose end, pull the inlet filter out with fingers or pincers, clear rust, sand or stones from it, and reassemble the filter before reconnecting the hose — LG is explicit that the filter goes back in.
5. On a front-loader, check the drain hose before condemning the valve: is its end submerged, is the hose sitting too low, and has the hose popped out of its holder at the back? LG's fix for the popped holder is simply to snap it firmly back into place.
6. Separate house-side from machine-side the way LG's thaw steps do: disconnect the supply hose and open the faucet. Strong flow at the open faucet with a washer that still will not fill moves the hunt to the filter, the hose and the valve, in that order.
7. Note which temperature fails: a 1E only on hot or warm cycles, with cold fills normal, points at one side of the supply — that side's faucet, hose, filter or valve solenoid — and halves the diagnosis before anything is opened.

How to fix the 1E error code

1. Restore full flow; replace the valve if a solenoid meters open.
2. Check the sensor hose if water enters but 1E persists.
3. Thaw a frozen supply by LG's method (hot-water towel on the faucet for about five minutes; disconnected hose thawed in water at or below 50°C) and reconnect only when the hose is completely free of ice.
4. Correct the drain geometry on the siphon branch: raise the drain hose, keep its end out of standing water, and reseat it in its holder. No part is replaced on this branch because no part has failed.
5. After any supply-side fix, run a short cycle and watch the fill complete; LG's framing is that the method either solves the issue or leaves the inlet valve as the malfunction suspect — at which point its instruction is to request a repair, not to keep cycling the power.

The part that usually fails: Water inlet valve assembly

Solenoid continuity comparison is the test.

How to reset / clear the 1E code

Power-cycle and retry a cycle; clears on a normal fill.

LG's standard reset is a power cycle: press Power off, unplug the washer for about 5 minutes, then — with the machine still unplugged — press and hold the Start/Pause button for 5 seconds to drain residual charge from the board. Plug back in and run a test cycle. There is no hidden reset button on LG washers; any code that reappears after this procedure is an active fault the control is still detecting, not a glitch that needs a deeper reset.

Why does the 1E code keep coming back?

Pressure sag at busy times or a waterlogging sensor hose are the usual return stories. A 1E that returns at the same time of day, on an otherwise healthy machine, tracks the house rather than the washer: LG's supply framing covers interruptions and partial reopenings, and a fill that succeeds at quiet hours but times out when the house is drawing water heavily is a supply-pressure story to prove with the bucket test before any part is ordered. A 1E that returns only after the washer has been pushed back into place is the bent-hose story LG warns about — vibration finishing what the push-back started. And a 1E that alternates with normal fills across temperatures is one side of the supply narrowing: clean that side's filter again and look harder at that side's hose run, because a fault that respects the hot/cold split lives on one side only.

How to stop 1E coming back

• Taps/hoses restricting flow: Closed taps, kinked or frozen hoses.
• Blocked inlet screens: Sediment build-up at the valve filters.
• Inlet valve failure: Dead solenoid or stuck valve.

Retrieving stored fault codes on LG washers

LG front-loaders have a test mode used by technicians: with the machine off, a specific three-button combination (commonly Soil Level + Spin Speed + Power held in sequence on many models, and a button-pair hold on others) steps the machine through fill, wash, drain, spin and heater tests while the display shows stored error history. The exact combination differs by model year, so technicians read it from the service manual for the model; if you enter a mode where the tub starts filling or the motor jogs, that is the test mode working — press Power twice to exit.

Other LG washer error codes

See the full list on the LG Washer error codes hub.

Codes 1E gets confused with

FE — Overflow error — the water level is too high (LG's manuals: 'Water level is too high due to a faulty water valve'; LG's top-load list: the washer has detected an overfilled tub). FE is LG's overfill code, the mirror of IE: too much water has been supplied to the tub.

IE — Inlet error — the washer is not filling with water properly (Water Inlet Error). IE (also read as 1E on segmented displays — they are the same code) means the control called for water and the level did not rise as expected.

vS (shown as u5 / uS) — Vibration sensor error — LG's code is vS; on the display it appears as u5 or uS. LG: the error may occur if there is a contact issue with the vibration sensor or if the sensor malfunctions. Start with the letters themselves, because they explain most confused searches: LG names this code vS, and its own guides warn that the vS error may appear as u5 or uS on the display — the seven-segment rendering of vS is what owners transcribe as 'U5'.

AE — Two different LG faults share this code, by platform. On LG top-load washers AE is a rotation error: the gears responsible for rotating the drum cannot operate properly. On LG front-load washers (global/EU manuals) AE is a water leakage error: water leaks — call for service. AE is the LG washer code where reading a single meaning off the internet does real damage, because LG itself publishes two.

Working from a symptom instead? Read our troubleshooting guide for this problem.

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Facts on this page were checked against manufacturer documentation: www.lg.com · www.lg.com · lg.com · www.lg.com