LG IE Error Code: Water Inlet Problem — Causes & Fixes
IE is LG's inlet error: the control opened the water valve and the level did not reach its target within the time allowed. LG washers and LG dishwashers both use the code. The control watches a water-level reading while it fills, and when that reading lags it stops rather than wash with too little water. IE does not say where the water was held up: at the house valve, in a hose, at the small screens inside the machine's inlet, or in the inlet valve itself. Most of that path can be checked by the owner without tools, and the cheap causes are the ones to rule out before anyone opens the cabinet.
If the reset didn't clear IE
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Which LG models show IE
IE appears on LG front-load washers (model numbers starting WM), top-load washers (WT), the washer half of LG's stacked units, and LG dishwashers. A washer has separate hot and cold supplies and a valve port for each, so an IE that shows only on warm or hot cycles points at the hot side. An LG dishwasher has a single supply, normally from the hot line under the kitchen sink, and its inlet valve sits behind the kick plate. The owner checks below are written for both, and say where they differ.
Common causes
Supply valve closed or half-open
After plumbing work, a water-heater replacement or a condo water shut-off, the valves behind the machine are often left partly closed. A valve open a quarter turn lets a trickle through, and the machine times out.
Inlet hose kinked or collapsed
A washer pushed back against the wall folds its hoses. An old rubber hose can also collapse inside at a bend while looking fine from outside.
Inlet screens blocked
Mesh screens where the hoses meet the machine catch grit and scale. Work on the water main, or a new water heater, sends a burst of sediment that lands here first.
Weak household supply
If every tap in the home runs weak, the machine is not the fault. The bucket test below separates a supply problem from an appliance problem in a minute.
Inlet valve failed
The valve is an electric solenoid that opens when the control powers it. A burnt coil or a stuck diaphragm leaves the machine clicking or humming with no rush of water behind it.
What you can safely try
- Turn the power off, then the water. Unplug the washer, or switch off the dishwasher's breaker, and close the supply valves before disconnecting anything.
- Open the valves fully and check the hoses. Open each valve all the way; a lever valve should sit in line with the pipe. Straighten any fold, and replace a hose that is cracked, bulging or collapsed rather than straightening it.
- Clean the washer's inlet screens. With the valves closed and a towel and bucket ready, unscrew the hoses at the back of the washer and pull the small mesh screens out with needle-nose pliers. Rinse and refit them. Never run the machine without them, because grit then reaches the valve.
- Do the bucket test. Hold the free end of a hose in a bucket and open its valve briefly. A strong stream means the supply is good and the fault is at the machine; a trickle means the valve, the hose or the home's supply.
- Reconnect and restart. Reconnect the hoses hand-tight plus a quarter turn, open the valves, check for drips, restore power, and start a short cycle while you listen for water rushing in.
When to call a professional
If the bucket test gives a strong stream, the screens are clean, and IE persists, the inlet valve, the level sensor or the wiring between them and the control needs testing, which is done with the cabinet open and the machine powered. On a dishwasher, the inlet valve and its screen are behind the kick plate, beside live wiring. Call us. Until then, close the supply between loads: a valve that sticks shut today can stick open tomorrow and overfill the machine.
What the technician tests
- Valve coil resistance. Each coil of the inlet valve is measured. An open or out-of-range coil means a new valve; a good coil moves the test to its supply.
- Voltage at the valve during fill. If the control sends power and no water flows, the valve is stuck; if no power arrives, the harness or the control is at fault.
- Flow through each port. Water flow through the hot and cold ports is compared, which finds a valve that is only partly open on one side.
- Level sensor and its tube. When water does arrive but the control does not see it, the level sensor and the tube that connects it to the tub are checked for a blockage or a split.
What it costs
If you fix it yourself: $0 (opening valves, straightening hoses, cleaning the inlet screens).
With a technician: A fixed price after diagnosis, agreed before any work starts; the diagnostic fee is applied to the repair when you approve it.
Frequently asked questions
What does IE mean on an LG washer?
Inlet error: water did not come in fast enough to reach the level the control expected within the fill time. Start with the supply valves, the hoses and the inlet screens.
IE only shows on warm or hot cycles. Why?
Warm and hot cycles draw from the hot inlet. A half-closed hot valve, a blocked hot-side screen, or a failing hot coil on the inlet valve shows only on those cycles. Run a cold cycle; if it fills normally, the problem is on the hot side.
Can low water pressure cause an LG IE error?
Yes, if the supply is weak enough. The bucket test separates the two: a weak stream at the hose end means the supply, a strong one means the machine. The installation section of the owner's manual gives the pressure range the machine is built for.
Is IE on an LG dishwasher the same fault?
Yes, the dishwasher did not fill in time. Check that the valve under the sink is fully open and that the supply line to the dishwasher is not kinked. The dishwasher's inlet valve and its screen sit behind the kick plate next to live wiring, so that part is a job for a technician.
Related codes: LG OE, Samsung SE / 5E.