DIY Error Codes

LG dryer error d80 / d90 / d95

Exhaust duct 80-95% blocked

Stop using the dryer. Have the exhaust duct cleaned or repaired, then check the outside vent.

Stop using the dryer until the exhaust is cleaned or repaired: a severely restricted exhaust can cause a fire.
Why
LG (p.57): "Do not use the dryer until the exhaust system has been cleaned and/or repaired. Using the dryer with a severely restricted exhaust is dangerous and could result in a fire or other property damage." Gas models, LG (p.4): "WHAT TO DO IF YOU SMELL GAS - Do not try to light any appliance. - Do not touch any electrical switch; do not use any phone in your building. - Clear the room, building or area of all occupants. - Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. - If you cannot reach your gas supplier, call the fire department." "Installation and service must be performed by a qualified installer, service agency or your gas supplier." LG (p.5): "Disconnect the power cord, house fuse or circuit breaker before installing or servicing the appliance."

Fix it step by step

Step 1 of 6

  1. Stop using the dryer

    • Now
    • None
    • Caution

    Safety: Stop using the dryer until the exhaust is cleaned or repaired: a severely restricted exhaust can cause a fire. Fire risk from a restricted exhaust.

    LG: don't run it until the exhaust is cleaned or repaired.

    Why & details

    Stop using the dryer.

    LG chart, d80/d90/d95 (p.57): "Do not use the dryer until the exhaust system has been cleaned and/or repaired. Using the dryer with a severely restricted exhaust is dangerous and could result in a fire or other property damage."

  2. Check the vent hood

    • 5 min
    • None
    • DIY

    Look for damage or lint clogging; keep the area clear.

    Why & details

    Check the vent hood.

    LG chart, house exhaust system blocked (p.57): "Check vent hood for damage or lint clogging. Make sure the area around the vent hood is clear." Also: "Keep the area around the dryer clean and free of clutter."

    Did the code clear?

  3. Have the ductwork cleaned and inspected

    • Appointment
    • None
    • Pro decision

    Safety: Stop using the dryer until the exhaust is cleaned or repaired: a severely restricted exhaust can cause a fire. Gas models: never disconnect or move the gas line yourself.

    LG suggests a duct cleaning service for the exhaust system.

    Why & details

    Have the ductwork cleaned and inspected.

    LG chart (p.57): partial blockage of the ductwork due to lint buildup or other foreign object, "Ductwork should be checked/cleaned immediately." LG's note for the Flow Sense indicator: "Contact a duct cleaning service to set up an appointment to have your exhaust system cleaned and inspected." If the exhaust run is too long or has too many turns, LG says to install a shorter or straighter duct run (Installation Instructions); if it is extremely long, have it repaired or rerouted.

    Did the code clear?

  4. After cleaning: check the outside airflow

    • 3 min
    • None
    • DIY

    Safety: Stop using the dryer until the exhaust is cleaned or repaired: a severely restricted exhaust can cause a fire. Fire risk: do not run the dryer until the exhaust is cleaned or repaired.

    Only after the duct is cleaned: run the dryer and feel for strong airflow outside.

    Why & details

    After cleaning: check the outside airflow.

    LG chart (p.57): "Check the outside dryer vent while the dryer is operating to make sure there is strong airflow." Do this only after the exhaust has been cleaned and/or repaired; LG (p.57): "Do not use the dryer until the exhaust system has been cleaned and/or repaired."

    Did the code clear?

  5. Give Flow Sense a few cycles

    • 5 cycles
    • None
    • DIY

    It needs several normal cycles to reset after the fix.

    Why & details

    Give Flow Sense a few cycles.

    LG chart (p.57): after clearing the restriction, Flow Sense needs multiple consecutive cycles before the indicator resets. "If the Flow Sense indicator remains active for more than five cycles after the restriction has been cleared, call for service."

    Did the code clear?

  6. Call for service

    • Decision
    • None
    • Pro decision

    Still on after five cycles with a clear duct: call for service.

    Why & details

    Call for service.

    LG (p.57): call for service if the indicator stays active for more than five cycles after the restriction has been cleared. On gas models, installation and service must be performed by a qualified installer, service agency or your gas supplier (p.4).

    Still showing d80/d90/d95?Need a pro → call a pro

Code cleared. Nice work.

Watch the display for a day to make sure it stays clear.

Back to top

Fixed after any step? Watch the display for a day to make sure it stays clear. Still d80/d90/d95 after step 6? call a pro.

What d80/d90/d95 means

The dryer's exhaust vent is badly restricted. LG says not to use the dryer until the exhaust is cleaned or repaired, because a severely restricted exhaust can cause a fire.

More detail
LG's Error Codes chart (p.57) says the display shows d80, d90 or d95 when "The duct work is about 80% - 95% blocked" (the code is displayed for 2 hours only). The number is how blocked the Flow Sense system judges the exhaust to be.

5-minute checks

Full answer & models

LG dryer d80, d90 or d95 means the exhaust duct is about 80-95% blocked. Stop using the dryer until the exhaust is cleaned or repaired.

Applies to: DLE3600*DLG3601*DLEX4000*DLGX4001*DLEX4200*DLGX4201*DLEX4500*DLGX4501*
Also searched as: LG dryer d80, LG dryer d90, LG dryer d95, LG dryer error code d80, LG dryer error code d90, LG dryer error code d95, LG Flow Sense error, LG dryer D80 code

Call a pro if…

  • You smell gas (gas models: leave and follow LG's gas-smell steps first).
  • The duct needs cleaning, rerouting or repair inside a wall or roof.
  • The indicator stays on for more than five cycles after the duct is cleared (LG: call for service).

FAQ

What does d80, d90 or d95 mean on an LG dryer?

LG's chart says the duct work is about 80% to 95% blocked. The number shows how restricted the exhaust is.

Can I keep using the dryer?

No. For d80/d90/d95, LG says not to use the dryer until the exhaust system has been cleaned and/or repaired, because a severely restricted exhaust could cause a fire.

Why is the indicator still on after cleaning?

LG says Flow Sense needs multiple consecutive cycles to confirm the improvement. If it stays on for more than five cycles after the restriction is cleared, call for service.

Source: LG Dryer Owner's Manual DLE3600*/DLG3601*/DLEX4000*/DLGX4001*/DLEX4200*/DLGX4201*/DLEX4500*/DLGX4501* (MFL70442647): Error Codes p.57, Safety Instructions pp.4-5. Written by the DIY Error Codes team. Updated 2026-10-17. DIY Error Codes is independent and not affiliated with or endorsed by LG.