Step-by-Step DIY Fix Guide
- SAFETY: Unplug the dryer before cleaning the sensor bars.
- Locate the humidity sensor — it consists of two small metal bars or strips inside the drum, usually on the front wall near the lint filter opening.
- Wipe the sensor bars thoroughly with a cotton ball or soft cloth dampened with rubbing alcohol — remove all residue.
- Allow to dry fully before restoring power.
- Plug in and run a test auto-dry cycle.
- If HS persists after cleaning the sensor bars, the sensor itself or its wiring needs professional inspection.
If the warning comes back after restart
- If the warning returns immediately after a clean restart, the sensor or wiring path becomes more likely than a one-time glitch.
- HS persists after thoroughly cleaning the sensor bars with rubbing alcohol
What This Error Means
Error HS on your LG dryer means: The dryer's humidity sensor has returned an abnormal reading or has stopped responding. Auto-dry cycles use this sensor to detect when clothes are dry and stop the cycle — a fault here can cause over-drying, under-drying, or a stopped cycle. The dryer's self-diagnostic system has detected this condition and stopped or paused the cycle.
The most frequent cause is humidity sensor bars coated with dryer sheet residue or fabric softener buildup — the most common and easily fixed cause. Work through the causes and fix steps below in order — many LG dryer errors are resolved without a service call.
Many cases of HS can be resolved by the homeowner. The steps below cover the full DIY checks — if they do not resolve the error, a technician is needed.
Electronics and sensor faults require professional diagnosis. A 2–3 minute power reset resolves transient faults. If the code returns after a reset, the physical component has failed and will not recover without replacement.
Most Likely Cause by Symptom
The LG dryer may stop, pause, or refuse to complete the cycle normally.
Likely cause: Humidity sensor bars coated with dryer sheet residue or fabric softener buildup — the most common and easily fixed cause
Check first: SAFETY: Unplug the dryer before cleaning the sensor bars.
The warning may return immediately because the appliance is detecting an internal fault.
Likely cause: Humidity sensor bars corroded or damaged
Check first: Locate the humidity sensor — it consists of two small metal bars or strips inside the drum, usually on the front wall near the lint filter opening.
Common Causes
- Humidity sensor bars coated with dryer sheet residue or fabric softener buildup — the most common and easily fixed cause
- Humidity sensor bars corroded or damaged
- Wiring fault between the sensor and the control board
- Control board fault affecting the humidity sensor input
What Not to Do
- Do not use abrasive pads to clean the sensor bars — scratching the surface reduces their accuracy
Model and Display Variation Notes
Model-family notes
- LG dryer display wording and code formats can vary by series.
- If your model behaves differently, check the owner manual before trying any deeper maintenance step.
Display and panel differences
- Panel wording can vary by series, so confirm the exact code pattern before buying parts.
Parts, Tools and Service Options
Common parts
- Humidity sensor assembly ($15–$40)
Manual and model check
Check your exact model and manual before ordering any LG dryer parts.
Service option
LG service visit if the warning returns after the basic checks are complete.
Suggestions in this section are organized to support the troubleshooting flow first. Any future affiliate relationships should be disclosed clearly.
When Not to Keep Troubleshooting
HS persists after thoroughly cleaning the sensor bars with rubbing alcohol
How to Prevent It Recurring
- Avoid using dryer sheets — the waxy coating they leave on the drum and sensor bars gradually degrades auto-dry accuracy and eventually causes HS
- Clean the humidity sensor bars with rubbing alcohol every 3 months to remove residue buildup
Related Error Codes
tE1
The dryer has detected a fault in one of its thermistors (temperature sensors). tE1 typically indicates the exhaust thermistor, tE2 the inlet thermistor, and tE3 a secondary thermistor — all three variants indicate the same class of problem at different sensor locations. The dryer has stopped to prevent overheating.
D80
LG dryer error D80 usually means the exhaust duct is heavily restricted and airflow is no longer safe or efficient.
Extra notes
- This page is based on LG support material and stays conservative where model-specific guidance may vary.
- The goal is to help you identify safe first checks before you move into parts, service, or model-specific manual lookup.
Source and model notes
Last reviewed: 2026-04-08
Based on: Based on LG support material and edited into consumer-safe guidance for the exact code family on this page.
Model coverage note: LG dryer code meanings can vary by series, control panel, and model family, so use this page as a safe starting point rather than a replacement for the model-specific manual.
Important: FixThisError is an independent guide, not the manufacturer. Use your model-specific manual when the panel wording or behavior differs.
Always disconnect power before inspecting appliances. If unsure, contact a licensed appliance technician.