Error code reference

Samsung Washer Error Code LO

Door unlock fail: door is not opened after door open operation; door lock switch terminal connected incorrectly or broken, electric wire leakage, or main PCB fault.

SourceSamsung Washer - Full Service Manual: WF455ARG/WF457ARG Series (Grace-S)p. 24, 28

Diagnostic procedure

The full LO 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
1
First diagnostic step
Check the door switch resistance; replace if faulty.

SourceSamsung Washer - Full Service Manual: WF455ARG/WF457ARG Series (Grace-S)p. 24, 28

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

89 manuals in the MyPros+ library document this code for Samsung washer.

Models covered by the manuals that document this code

More models are covered than are listed here.

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