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Error code reference
Samsung Washer Error Code 12E
Switch error (USA designation) equivalent to bE1; Power button pressed continually for more than 12 seconds.
SourceSamsung Washer - Service Manual: Error Code Troubleshooting (WB25M9MDPYE)p. 4-2
Diagnostic procedure
The full 12E 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
Reset the Power S/W
SourceSamsung Washing Machine - Service Manual: K4578D/H1245Ap. 18
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
2 manuals in the MyPros+ library document this code for Samsung washer.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
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