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The back of a newly installed dryer pulled a little away from a laundry room wall, a short rigid metal exhaust duct joined to the dryer's outlet with a clamp and running straight to the wall, the floor behind swept clean, nobody in the frame.

LG d90 — a graded duct blockage reading on a new hookup

LG's own help library explains that d90 or d95 mean the dryer has detected a 90 or 95 percent blockage in the duct work, and specifically warns not to use the dryer until the exhaust system has been cleaned and repaired.

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Mon–Sat, 8am–8pm

  • Vents and ducting
  • Laundry exhaust run installation
  • Source: LG

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What d90
actually means.

LG's own help library explains that d90 or d95 mean the dryer has detected a 90 or 95 percent blockage in the duct work, and specifically warns not to use the dryer until the exhaust system has been cleaned and repaired.

LG appliance display · also shown as d95, d80, d75

What to do when d90 shows on the appliance

Kind of codeVents and ducting

A restricted-exhaust message on one of the first loads means the new dryer is pushing against its duct. The cause is almost always the install: a run longer than the maker's table allows for its number of elbows, a transition duct crushed flat when the machine was pushed to the wall, a duct pulled off its collar, or a wall cap whose flap cannot open. Stop the cycle, unplug, and have the run shortened, straightened and reconnected before the next load.

Usually leads toLaundry exhaust run installation

A metal exhaust path from a new dryer to the outdoors: short transition, taped joints, a working hood.

Shows up asLaundry Exhaust Crushed, Loose or Blowing Into the Room

A laundry exhaust disconnected, crushed or venting into the room means a new vented dryer is blowing hot, damp, lint-heavy air behind the machine instead of outdoors.

MakeLG

LG installs span refrigerators with water lines, stacked or side-by-side laundry, dishwashers and ranges, often with a Wi-Fi setup at first power-on.

SourceLG USA Support — Understanding d90 and d95 Error Codes

LG documents a graded scale from d75 through d95 on the same dryer platform, with severity increasing toward d95.

Before you book,
in this order.

Each step comes from LG's own guidance for d90 on its appliances. Follow it to the end: the last card says whether this is a visit.

01

Confirm the lint filter itself is clean before assuming the duct run is the cause.

02

Check for airflow at the outside vent while a cycle is running.

03

Disconnect and inspect the full duct run for obstructions, including anywhere it was crushed or kinked during installation.

04

Do not run the dryer again until the exhaust system is confirmed clear and repaired, per LG's own warning.

Still there?

It usually turns into laundry exhaust run installation. Book with the code and the model number.

What not to do

d90 does not mean the heating element or the drum motor has failed. LG's own explanation points entirely at the exhaust duct outside the cabinet, which is an installation and maintenance detail rather than a part inside the unit.

What you may
notice with it.

The appliance problems d90 tends to arrive with. Answer these at the appliance before anyone is booked.

All problems

Before you call

Laundry Exhaust Crushed, Loose or Blowing Into the Room

All 6 causes, cheapest first

It also comes with

A home laundry room seen from the side, a new front-loading dryer standing still with its door closed and its display dark, a silver metal transition duct hanging loose and disconnected from the round wall collar behind it, a little gray lint scattered on the floor and the wall behind the machine, the power cord unplugged and lying on the floor. Hazard after a hookup

Laundry Exhaust Crushed, Loose or Blowing Into the Room

6 causes, cheapest first

Where d90 usually leads

Laundry exhaust run installation.

Metal exhaust transition and reachable wall run fitted from a new dryer to the outside hood, joints taped, airflow confirmed · moderate.
Book a visit What the job involves

LG
appliances.

LG installs span refrigerators with water lines, stacked or side-by-side laundry, dishwashers and ranges, often with a Wi-Fi setup at first power-on.

LG appliance installation

More LG codes

GASE13SbIEUEOEOFF

Vents and ducting on other makes

Electrolux EF1GE Profile Check Vent / Vent BlockedSamsung C90
A bright kitchen during an installation, a new stainless French door refrigerator on a low four-wheel appliance dolly being eased toward an empty cabinet opening, a technician seen from behind and shoulders down guiding it with one hand on the side of the cabinet, a folded moving blanket and a coil of new braided water line on a protective floor runner, cardboard corner guards at the edge of the frame, even daylight. LG builds this

Cold storage

Setting a new refrigerator, freezer, wine or beverage unit or ice maker into its opening: measured, connected to water, leveled and started.

 A home kitchen mid-installation, a new stainless freestanding gas range pulled a foot out from its opening, a technician seen from the shoulders down kneeling beside it and tightening a new yellow-coated flexible gas connector to a wall shutoff valve with a wrench, a small spray bottle of leak solution on the floor, the anti-tip bracket screwed to the floor at the back, every burner off, even daylight. LG builds this

Cooking appliances

Hooking up ranges, cooktops, wall ovens, microwaves and hoods: gas connectors leak-tested, anti-tip brackets fastened, ducts sized and the first light checked.

 A kitchen during an installation, a new stainless built-in dishwasher halfway slid into its opening under a stone counter, its kick plate removed, a technician seen from behind and shoulders down on one knee guiding a gray drain hose and a braided supply line through the hole in the side cabinet, the sink cabinet doors open beside him, a flashlight on the floor, even daylight. LG builds this

Dish care

Fitting a new dishwasher or dish drawer under the counter: supply line, drain loop or air gap, power, mounting brackets and a first test cycle.

In LG's own words

If you see a d90 or d95 error on your control panel, your dryer has detected a 90% or 95% blockage in the duct work, prompting immediate attention.
LG USA Support — Understanding d90 and d95 Error Codes

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. LG documents a graded scale from d75 through d95 on the same dryer platform, with severity increasing toward d95.

LG d90 appliance installation,
where we come out.

The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.

All service areas

Tampa BayFL · 31 areas

OrlandoFL · 30 areas

Miami / South FloridaFL · 47 areas

New York MetroNY · 75 areas

HoustonTX · 36 areas

ChicagoIL · 50 areas

Los AngelesCA · 95 areas

San DiegoCA · 31 areas

San Francisco Bay AreaCA · 74 areas

A family unpacking groceries into a newly fitted kitchen, the fresh appliances set flush in their openings.
For the heart of your home.

Questions
about d90.

Can I clear d90 myself?
Confirm the lint filter itself is clean before assuming the duct run is the cause. If it comes back, it needs a visit.
Can a brand-new duct run already read as 90 percent blocked?
Yes, if the run is too long, has too many tight turns, or was crushed while the unit was pushed into place, a new hookup can show this reading on its very first cycle.
Is it safe to keep drying loads while d90 is showing?
No, LG's own warning is not to use the dryer until the exhaust system has been cleaned and repaired, since a heavily restricted duct affects both drying performance and heat buildup.
How is d90 different from d75 or d80?
They are all the same graded reading at different severities — LG's scale reports roughly 75, 80, or 90-95 percent blockage — so a lower number is still worth checking even though it is less urgent than d90 or d95.

Back to your everyday

Still showing d90?

A booking moves faster with three things: the message exactly as the display shows it, the model number from the carton or the rating plate, and the moment it first appeared. With those, the office can tell whether it is a setup step or a connection to put right, and send the part that fixes it.

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