LG Dishwasher IE — What It Means & How to Fix It
Also shown as 1E on some models.
Ten minutes of filling didn't raise the water level enough — almost always a supply problem between the shut-off valve and the unit rather than a failed part.
What this code means
IE (the letter I, often misread as 1E) is LG's water inlet error for dishwashers: after about ten minutes of trying to fill, the level never reached target. LG specifies household pressure between 20 and 120 PSI for these units, and most IE cases trace to a half-closed valve, a kinked line, or pressure below that floor.
The same two letters mean the same fill fault on LG washers, but the plumbing differs — for the dishwasher, everything to check lives under your kitchen sink.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Shut-off valve under the sink partly or fully closed | Very common | Yes — no tools |
| Kinked or pinched supply line | Common | Yes — visual check |
| Household pressure below the 20 PSI minimum | Occasional | Partly — test other taps |
| Failed inlet valve on the unit | Less common | No — technician job |
What you can try yourself
- Open the under-sink cabinet and turn the dishwasher's shut-off valve fully open — it's routinely left half-closed after plumbing work.
- Follow the supply line as far as visible, straightening kinks and moving anything crushing it.
- Run the kitchen tap: a weak stream there too means a pressure or supply problem upstream of the dishwasher.
- Cut power at the breaker for one minute, restore, and start a cycle — listen for the hum and hiss of filling in the first minute.
- If the valve is open, pressure is healthy, and the unit still won't fill, the inlet valve has likely failed — a technician's part.
When to call a technician
- Everything upstream checks out but no water enters — inlet valve or its wiring.
- A buzz from the unit at cycle start with no water sound.
- IE alternates with the AE leak code, which needs professional eyes before more cycles run.
Typical professional repair cost: Dishwasher inlet valve replacement typically runs $100–$200 including labor.
Frequently asked questions
How long does an LG dishwasher try to fill before showing IE?
Roughly ten minutes. If the level sensor hasn't seen enough water by then, the unit gives up and reports rather than running a dry wash. That generous window is why genuine IE errors almost always mean a real supply restriction.
What pressure does my supply need?
LG specifies 20 to 120 PSI. Below 20, fills crawl and time out. If your kitchen tap fills a measuring jug noticeably slowly compared to other homes, low pressure is worth investigating before any parts get replaced.
Can a water softener or filter cause IE?
An exhausted or clogged inline filter ahead of the dishwasher can throttle flow enough to time out the fill. If your install has one, check its service date — it's a frequently forgotten restriction.
Related LG codes
- LG Dishwasher OE The dishwasher can't drain its water — check the internal filter, the drain hose, and (after a new disposal install) the knockout plug everyone forgets to remove.
- LG Dishwasher AE The leak sensor in the base of the dishwasher detected water — the unit goes into a protective drain mode, and the cause ranges from oversudsing to a genuine seal failure.
- LG Dishwasher HE The dishwasher's water heating system isn't working as expected — and because it involves a high-wattage heater on mains power, this is one to hand to a technician.
- LG Dishwasher FE The unit detected more water than it should ever hold and started draining on its own — a stuck inlet valve or level-sensing fault is behind most cases.
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