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Error code reference
Samsung Range Error Code 4d51
Door switch not open or closed: invalid state detected.
Diagnostic procedure
The full 4d51 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
Disables Clean and Lockout functions; turns off light and disables light from door switch.
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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