Lg Dryer Error Code D90
Last updated: January 5, 2026 MEDIUM
⚠️ Safety Warning
- Unplug the appliance before attempting any repairs
- Never attempt repairs while the appliance is energized
- If you're unsure, contact a certified Lg technician
- Keep children and pets away during troubleshooting
🔧 Tools You May Need
- Multimeter
- Screwdriver set
- Work gloves
- Vent brush
- Vacuum
- Flashlight
What Does Error Code D90 Mean?
Error D90 on your Lg dryer indicates control board communication errors. This commonly happens when component failure occurs, affecting the the sensor assembly.
Common Causes
- duct blockage
- power supply
- thermistor
How to Fix Error Code D90
Step 1: Reset Your Dryer
- Unplug the dryer from the power outlet
- Wait 2-3 minutes for the capacitors to discharge
- Plug the appliance back in
- Check if the error code has cleared
Diagnostic Checks for Dryer Error D90
| Diagnostic Check | Expected Result | If Failed |
|---|---|---|
| Check exhaust vent for blockage | Strong airflow at exterior vent | Clean entire vent run, remove lint buildup |
| Test thermal fuse with multimeter | Continuity (near 0 ohms) | Replace thermal fuse (do not bypass) |
| Inspect heating element | No visible breaks, element glows red | Replace heating element assembly |
| Check drum rotation | Drum spins freely, belt intact | Replace belt or drum rollers |
| Verify gas igniter (gas models) | Igniter glows, gas ignites within 90 sec | Replace igniter or gas valve coils |
💡 Pro Tips from ErrorCodeHub
Gas Dryer Igniter: Gas dryer not heating? The igniter is the most common culprit. If it glows but gas doesn't ignite within 90 seconds, the igniter needs replacement.
Frequently Asked Questions
What does Lg error code D90 mean?
Error D90 on your Lg dryer indicates control board communication errors. This commonly happens when component failure occurs, affecting the the sensor assembly.
Can I fix error code D90 myself?
Many D90 errors can be fixed with basic troubleshooting. Start with a reset, then check common causes.
How much does it cost to fix error D90?
Repair costs typically range from $50-$300 depending on the cause.
Should I call a technician for error D90?
If basic troubleshooting doesn't work, or you're uncomfortable with repairs, contact a certified technician.
More Lg Dryer Error Codes
When to Call a Professional
Consider contacting a certified Lg technician if:
- The error persists after troubleshooting
- You're not comfortable with DIY repairs
- The repair involves electrical or gas components
- Your appliance is still under warranty
Find a technician: Call Lg support or search for certified repair services in your area.