Error code reference

LG Microwave Error Code L

Child Lock is active-appears for 1 second when attempting to start cooking while Child Lock is engaged; microwave power and heater power are set to zero.

SourceLG MH-1355M Series Microwave - Full Service Manualp. 14

LG codes LG microwave codes

Diagnostic procedure

The full L procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Touch and hold the '0' key pad for more than 2 seconds to cancel Child Lock (touch STOP/CLEAR first).

SourceLG MH-1355M Series Microwave - Full Service Manualp. 14

Unlock with pass

More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

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Where this code is documented

1 manual in the MyPros+ library documents this code for LG microwave.

Models covered by the manuals that document this code

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The full L procedure

Where this code is documented

Models covered by the manuals that document this code

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