LG IE fault codewhat it means and how to fix it
Water inlet problem. It is IE with a letter I, not 1E — the washing machine convention does not apply here.
Take care
What IE means
IE means a water inlet problem, and LG’s remedy is short: check for a clogged, kinked or frozen water supply hose, and check the water supply. Before anything else, settle the character. LG washing machines are widely documented as showing 1E and IE interchangeably, and people carry that across. The LG UK dishwasher manual uses IE with a letter I and 1E appears nowhere in it. On a seven-segment display the two are nearly indistinguishable, so it makes no practical difference to what you are looking at, but it matters when you are searching, because searching for the digit will land you in washing machine results for a different fault.
LG’s own online IE article opens with a different distinction — is it IE showing, "not E1"? — because E1 on an LG dishwasher is a leak code, which is covered on the AE page. LG UK’s article also explains what the machine is measuring: the code appears when a specified amount of water has not arrived in the tub after somewhere between 30 seconds and 10 minutes, and its two named causes are the water being cut off or the supply hose kinked or pressed, and the inlet valve under the sink being closed — often, LG say, because the installer shut it to prevent leaks while fitting the machine.
LG mention a frozen hose in the same breath as a kinked one, and that is worth taking seriously rather than reading as boilerplate. Dishwashers get installed in garages, outhouses and utility rooms that run cold, and a supply hose against an uninsulated external wall will freeze before anything else in the house does. If the code appeared during a cold snap on a machine that had been faultless, that is the first thing to check and it costs nothing. The manual’s specification for the supply is a pressure between 0.05 and 1.0 MPa, and its installation-check table says plainly that pressure "may be too high or too low".
What causes it
| Cause | What is actually happening | How likely |
|---|---|---|
| Tap, inlet valve or shut-off valve closed | Free to check and the first thing to eliminate, particularly if anyone has been working under the sink or the machine is newly installed. LG: turn the inlet valve anti-clockwise to open it, and check the shut-off valve above it as well. | Common |
| Inlet hose kinked or pressed | Usually crushed against the wall when the machine was pushed back into its housing, or squashed by something stored under the sink — LG’s article says to look for objects placed near the hose. | Common |
| Supply hose filter clogged | LG fit a plastic filter into the inlet of the water supply hose connection and say that if insufficient water flows in, check it is not blocked. Grit from the mains collects there. Cleanable in a few minutes. | Common |
| Supply hose frozen | LG list this explicitly. Real in unheated spaces and against external walls, and it resolves itself once things warm up. | Occasional |
| Water pressure out of range | LG’s permissible inlet pressure is 0.05 to 1.0 MPa. A weak or shared supply, or a partly closed valve upstream, starves the fill; the machine is fine and the plumbing is not. | Occasional |
What to try yourself
Check there is water at the kitchen and bathroom taps — LG’s first question is whether the house supply is off. Then check the valve feeding the machine under the sink is fully open: LG say turn it anti-clockwise to open, and make sure any shut-off valve above it is open too.
Look along the inlet hose under the sink and behind the machine, and straighten anything kinked or pressed. Move whatever is squashing it.
In cold weather, feel the hose. If it is frozen, LG’s remedy is to soak a towel in warm water and wrap it around the frozen part, then dry the hose afterwards.
Warm water on a towel is LG’s method. Do not use a heat gun or boiling water on a plastic hose.Clean the supply hose filter LG’s way: unplug the appliance, turn off the tap, unscrew the water supply hose, remove the seal and the plastic filter with a pair of small pliers, rinse them clean of grit, and refit the filter and seal so they sit correctly.
Refit the hose by hand only — LG say not to use any mechanical device to tighten it, and that a soft cloth can help you grip. Turn the water back on and run a short programme, watching the connection for weeping. If everything is clear and IE persists, LG’s guidance is that a technician’s inspection is needed.
Get a qualified appliance engineer to look at your LG IE
We do not pass enquiries to a repair firm, so there is no form here. When you book a qualified appliance engineer, tell them the make, the model and the exact code or message on the display, and ask whether they carry parts for this make — that is what turns one visit into a repair rather than a quote.
What it costs to fix
Typical repair cost
£0–£150
Time on site
30 minutes
Usually free. A replacement inlet valve is typically £80 to £150 fitted.
Typical UK prices including parts and labour, updated September 2026. Your quote may differ.
Own this appliance and had this code? . Nothing is published until a person has read it.
Related LG fault codes
- OEGet it checkedDrainage problem. LG list this twice — once as a running fault and once as an installation fault — and the second is the one people miss.Related: same brand
- AEStop — call an engineerLG’s leak and overfill code, shown as AE, E1 or FE depending on the model. The manual says call for service if it recurs; LG’s online guide says unplug it and book. Do the second.Related: same brand
- HEGet it checkedHeater circuit failure. The dishes come out wet and nothing has been properly sanitised, even though the cycle appeared to finish.Related: same brand
- LEGet it checkedMotor trouble on the Direct Drive motor — and the code where LG’s 10-year warranty claim needs checking carefully before you pay for anything.Related: same brand
- bEUsually simple to fixOversudsing, and LG name the culprit outright: liquid dish soap. Their published remedy involves a bowl of milk, which sounds like folklore but is in the manual.Related: same brand
Own a LG dishwasher? Save it and its codes come first next time.
Related guides
Common questions about LG IE
Is it IE or 1E?
On an LG dishwasher it is IE with a letter I. The 1E form belongs to LG washing machine documentation and does not appear in the LG UK dishwasher manual at all. The two look almost identical on the display, so the distinction only matters when you go searching. The distinction LG themselves draw is IE versus E1, because E1 on their dishwashers means a leak or overfill, not a fill problem.
Can my supply hose really freeze?
LG list frozen alongside clogged and kinked, so they clearly see it. It happens where machines are in garages, outhouses or utility rooms on an outside wall. LG’s thaw method is a towel soaked in warm water wrapped round the frozen section, dried off afterwards.
The tap is on and the hose is clear. What now?
Check the plastic filter in the supply hose connection, which LG name as the thing to look at when insufficient water flows in. If that is clean, it is the inlet valve or the supply pressure — LG’s permissible range is 0.05 to 1.0 MPa — and their instruction is a service visit.
Technical review
Not reviewed by an engineer
No engineer has read this page. Severity follows what the manufacturer publishes, and we would rather tell you that than let a byline imply a sign-off.
Sources and how we verified this
We establish the facts from the sources below and then write the explanation ourselves. We do not copy manufacturer wording and we do not host their manuals.
- Manufacturer technical and service documentation
- Manufacturer support portal
This page has not been reviewed by an engineer, and we would rather tell you that than imply otherwise. The severity rating follows what the manufacturer publishes: where they say isolate the appliance and call someone, so do we.