Error Code: E-05 Difficulty: Easy
Problem: In convection mode, the achieved temperature is more than 70°C when the user has set a temperature of 40°C.
How to Fix E-05 Error (Step-by-Step)
- Press the ‘STOP/CLEAR’ button to cancel the current operation and clear the error message.
- Unplug the microwave from the electrical outlet and confirm the error stays cleared during a full test cycle.
- Leave the microwave unplugged for at least 5-10 minutes. This allows the internal control board to fully discharge and reset.
- Plug the microwave back into the power outlet and confirm the error stays cleared during a full test cycle.
- Set the clock if it has been reset and confirm the error stays cleared during a full test cycle.
- Attempt to use the convection mode again. This simple power cycle often resolves temporary sensor glitches.
- Turn the appliance off, wait about 2 minutes, then turn it back on.
Recommended Parts to Check
Compatibility note: Exact LG microwave part numbers vary by complete model number, production revision, and internal layout. Treat these as diagnostic part-category searches, then confirm fit with the full model number before ordering.
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Start here
LG microwave humidity sensor
Common replacement category: Humidity or steam sensor
Symptom match: Most likely when: error E-05 appears during sensor cooking, reheating, or shortly after steam builds.
Check first: Check first: food splatter, blocked sensor airflow, and loose sensor connectors.
Find compatible LG microwave humidity sensor
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Also check
LG microwave temperature sensor
Common replacement category: Temperature sensor
Symptom match: Most likely when: error E-05 follows heating or cooling changes.
Check first: Check first: sensor resistance and harness continuity against the model service data.
Find compatible LG microwave temperature sensor
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Harness path
LG microwave wire harness
Common replacement category: Sensor harness
Symptom match: Most likely when: error E-05 is intermittent or changes when the cabinet is moved.
Check first: Check first: pinched wires, loose plugs, and corrosion before ordering parts.
Find compatible LG microwave wire harness
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Control path
LG microwave control board
Common replacement category: Electronic control board
Symptom match: Most likely when: sensor and harness tests pass but error E-05 returns.
Check first: Check first: board connectors and visible damage.
Find compatible LG microwave control board
Model-number note: Use the LG microwave model tag before buying; these links are not universal fit claims.
LG Microwave Error E-05 Checks Before Replacing Parts
- Disconnect power before opening the cabinet, and do not touch high-voltage parts unless you are trained to discharge and test them safely.
- Confirm the full LG model number from the tag before matching any replacement category to the appliance.
- Check the simple symptom path first: door closure, keypad response, airflow, and any obvious loose or damaged connectors.
- Test switches, sensors, or harnesses with a meter where the service data supports it instead of ordering parts by code alone.
- If the related parts test correctly, inspect the control area and harness before considering a model-matched control board.
When It’s Better to Replace Than Repair
Microwave repairs require extra caution because high-voltage parts can retain a dangerous charge after unplugging.
Door switches, turntable motors, fuses, and controls may be replaceable, but many microwave failures are safer and cheaper to solve with replacement.
For repair parts or built-in trim kits, verify exact fit with the full microwave model number before buying; these links are general replacement-appliance shopping options.
- [OK]Door switch or latch problems return after adjustment
- [OK]Turntable motor, fuse, or control repairs approach replacement cost
- [OK]High-voltage diode, capacitor, or magnetron is suspected
- [OK]Over-the-range fit, venting, or keypad issues keep recurring
Recommended Microwave Replacement Options
Countertop Microwaves
Simple Plug-In Replacements
- Fastest replacement path
- Measure counter depth and door swing
- Match wattage and capacity needs
Shop Countertop Microwaves
Over-the-Range
Microwave and Vent Hood Units
- Confirm width, mounting bracket, and cabinet height
- Match recirculating or exterior venting
- Plan for two-person installation
Compare Over-the-Range Units
Built-In Trim Kits
Cabinet-Fit Microwave Options
- Confirm trim-kit compatibility by model
- Measure cabinet cutout before ordering
- Do not assume old trim fits a new unit
View Built-In Options
Safety note: Do not service microwave high-voltage components unless you are trained and equipped to discharge and test them safely.
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Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
