LG Dryer Error Codes Explained: What They Mean and How to Fix Them

When your LG dryer displays an error code, it is reporting a specific fault detected by its internal diagnostic system. These codes are designed to help identify issues quickly—ranging from airflow restrictions and heating system failures to sensor faults, motor problems, and communication errors.

Understanding LG dryer error codes can help you determine whether the issue is a simple maintenance fix or a component-level failure that requires technical repair.

Important Safety Notice

Before performing any inspection or repair:

• Always unplug the dryer from the power outlet
• Allow all components to cool completely
• Avoid touching electrical terminals or internal wiring unless qualified
• Use proper multimeter safety procedures when testing components

Many LG dryer systems operate with high voltage and can store electrical energy even after shutdown.

LG Dryer Error Codes Overview

Modern LG Electronics dryers use multiple sensors and control systems to monitor temperature, airflow, motor performance, moisture levels, and electronic communication between modules.

When a fault is detected, the dryer will stop operation and display an error code.

1. Thermistor & Heating System Errors

tE – Thermistor Error

Related Codes

tE1, tE2, tE3, tE4

Meaning

The dryer has detected an abnormal temperature reading in the heating system or drum airflow circuit.

Common Causes

• Faulty thermistor sensor
• Damaged wiring harness
• Failed heating element
• Faulty thermostat
• Main control board malfunction

Technical Note

This error indicates that the drum outlet temperature is outside the normal operating range.

Repair Steps

• Inspect thermistor wiring connections
• Test sensor resistance at room temperature
• Check heating element continuity
• Replace defective sensor or control board if necessary

tE1 – Thermistor 1 Error

• Heat pump models may indicate compressor outlet overheating
• Check thermistor and airflow system

tE2 – Thermistor 2 Error

• Drum temperature reading abnormal
• Inspect sensor and wiring

tE3 – Thermistor 3 Error

• Heating system temperature deviation
• Check thermistor circuit

tE4 – Thermistor 4 Error

• Error clears when load is removed and unit is reset
• Often load-related or temporary fault

2. Mechanical & Drum System Errors

bE – Belt Error

Meaning

The dryer detects that the drum cannot rotate properly.

Causes

• Broken or slipped drive belt
• Faulty belt switch
• Motor failure
• Main PCB issue

Repair

• Inspect belt condition
• Test belt switch continuity
• Check motor operation

LE1 – Main Motor Restriction Error

Meaning

The drum motor is unable to rotate due to mechanical resistance or overload.

Causes

• Blocked airflow or mechanical obstruction
• Faulty motor
• Wiring harness issue
• Belt system failure

Repair

• Inspect drum rotation manually
• Check belt tension
• Test motor resistance
• Verify wiring integrity

3. Compressor & Heat Pump Errors

CE1 – Compressor Overheat Error

Meaning

The compressor is overheating or operating outside safe limits.

Causes

• High ambient temperature
• Faulty thermistor
• Compressor failure
• Airflow restriction

Repair

• Improve ventilation
• Test thermistor readings
• Inspect compressor operation

LE2 – Compressor Restriction Error

Meaning

Compressor cannot operate due to mechanical or airflow restriction.

Causes

• Blocked airflow
• High room temperature
• Compressor failure

4. Door & Heater System Errors

dE / dE4 – Door Error

Meaning

The dryer detects that the door is open or not properly latched.

Causes

• Door not fully closed
• Faulty door switch
• Broken door lock mechanism
• Control board failure

Repair

• Ensure door is fully closed
• Check switch continuity
• Inspect latch assembly

EHE – Electric Heater Error

Meaning

The heater circuit is drawing abnormal current or failing to heat properly.

Causes

• Faulty heating element
• Failed thermistor
• Control board malfunction

5. Moisture, Drain & Water System Errors

OE – Drain / Water Error

Meaning

Water is not draining properly or is detected above safe levels.

Causes

• Blocked drain hose
• Full water tank
• Faulty drain pump
• Sensor failure

Repair

• Clean drain hose
• Empty water container
• Test drain pump motor

IES / E5 – Water Inlet Error

Meaning

Water supply issue in steam or water-fed models.

Causes

• Closed water valve
• Blocked inlet filter
• Frozen hose
• Faulty inlet valve

Repair

• Check water supply pressure
• Clean inlet filter
• Test inlet valve coil resistance

6. Sensor & Electronics Errors

Hs – Humidity Sensor Error

Meaning

Humidity sensor is not reading correctly.

Causes

• Sensor failure
• Wiring issue
• Control board fault

nE / nF – Communication Errors

Meaning

Communication failure between display board and Wi-Fi/NFC modules.

Causes

• Faulty harness
• Defective module
• Display PCB failure

EE – EEPROM Error

Meaning

Control board memory failure.

Solution

• Replace main control board

7. Airflow & Duct Blockage Errors

Airflow restriction is one of the most common dryer issues.

d75 / d80 / d90 / d95 – Duct Blockage Alerts

Meaning

Dryer exhaust airflow is restricted:

• d75 → ~75% blocked
• d80 → ~80% blocked
• d90 → ~90% blocked
• d95 → ~95% blocked

Causes

• Lint buildup in vent
• Kinked exhaust hose
• Blocked external vent cap

Repair

• Clean full duct system
• Inspect external vent outlet
• Do not operate dryer until airflow is restored

8. Power & System Errors

PF/nP/P5: Power Interruption Error

Meaning

A power supply interruption occurred during operation.

Causes

• Power outage
• Loose power cord
• Tripped breaker

9. Gas Dryer Specific Error

9A5 – Gas Supply / Power Error

Meaning

Gas or power supply issue detected in gas dryer models.

Causes

• Incorrect wiring
• Gas valve closed
• Electrical supply failure

LG Dryer Electrical Component Reference (Technician Data)

Below are typical resistance values used in diagnostic testing:

• Temperature sensor: ~9.2 kΩ at 77°F (25°C)
• Compressor thermistor: ~282 kΩ at 25°C
• Belt switch: 0.1–2.1 Ω (closed), OL (open)
• Heating element: ~9.8 Ω per coil
• Motor switch: 0.1–2.1 Ω

Always ensure the dryer is unplugged before testing electrical components.

Expert Technician Insight

From a repair perspective, LG dryer failures typically fall into four major categories:

1. Airflow Restrictions (Most Common)

• Duct blockage
• Lint buildup
• Vent restriction

2. Heating System Failures

• Thermistor drift
• Heating element failure
• Relay faults

3. Mechanical Failures

• Belt breakage
• Motor failure
• Drum obstruction

4. Electronic Control Failures

• PCB failure
• Communication errors
• Sensor misreads

Correct diagnosis always begins with airflow and sensor testing before replacing major components.

Final Conclusion

LG dryer error codes provide a detailed diagnostic roadmap that helps identify faults quickly and accurately. By understanding what each code means—and how it relates to airflow, heating, sensors, and motor systems—you can significantly reduce repair time and avoid unnecessary part replacements.

For best results, always follow a structured diagnostic approach: airflow → sensors → mechanical → electronics.