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Error code reference
Samsung Range Error Code 3d21
Oven temperature sensor shorted: sensor resistance reads 0 Ohms.
Diagnostic procedure
The full 3d21 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 all cook functions for cavity. BAKE flashes on display. Check sensor wiring and resistance.
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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