d90
Moderate
LG · Dryers
90% exhaust blockage detected
Quick Answer
Error code d90 on your LG Dryers means: 90% exhaust blockage detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Step 1: Stop using the dryer immediately as this is a potential fire hazard.
2
Step 2: Remove and thoroughly clean the lint filter.
3
Step 3: Disconnect the dryer from the wall and detach the exhaust hose from both ends.
4
Step 4: Use a dryer vent cleaning kit with a long flexible brush to clean the entire vent run from the dryer to the exterior vent.
5
Step 5: Check and clear the exterior vent hood of all obstructions.
6
Step 6: Inspect the vent duct for any crushed, kinked, or damaged sections and replace if necessary.
7
Step 7: Replace any vinyl or foil vent hose with rigid or semi-rigid metal ductwork.
8
Step 8: Reconnect everything and run a test cycle to confirm the error clears.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Dryer vent cleaning kit
Rigid metal vent duct
Exterior vent hood cover
Related Error Codes