Seeing **E-31** on a Samsung microwave narrows the problem to **open gas sensor error**. What you do next depends on whether the code is an issue, a normal status/test message, or a model-dependent interpretation. Samsung appliances monitor whether a function reaches an expected state within a certain sequence. When that check fails, the control can store or display a code even though the root cause may sit elsewhere in the same circuit. The recorded display form is **E-31**. Search normalization stores it as **E31** while preserving the characters a homeowner actually sees.
Content status: Verified
Open gas sensor error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so E31 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Seeing **E-31** on a Samsung microwave narrows the problem to **open gas sensor error**. What you do next depends on whether the code is an issue, a normal status/test message, or a model-dependent interpretation. Samsung appliances monitor whether a function reaches an expected state within a certain sequence. When that check fails, the control can store or display a code even though the root cause may sit elsewhere in the same circuit. The recorded display form is **E-31**. Search normalization stores it as **E31** while preserving the characters a homeowner actually sees.
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
Important safety warning. Do not remove the microwave outer cabinet. High-voltage components can retain dangerous energy even after the appliance is unplugged. If resolving E-31 would require energized internal access, that is the point to hand the diagnosis to a qualified technician.
If the code returns, model-specific sensor, harness, connector, and control-board testing is appropriate. In a service visit for E-31, model-specific testing should follow the open gas sensor error circuit rather than treating the code as proof of one failed part.
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We diagnose Samsung microwave no-heat, keypad, sensor and control-related symptoms.
Open gas sensor error.
You can try the one reset Samsung documents for the model, but **E-31** returning afterward means the condition still exists. Note the operating stage instead of cycling power repeatedly.
Do not keep operating the appliance through a hazardous symptom just to see whether **E-31** clears. If there is heat, water, electrical, gas, or food-safety risk, stop and arrange diagnosis.
The code alone is not enough to justify a part. **E-31** should narrow testing to the affected function; the final cause still has to be verified on the exact model.
The same-looking code can be reused on another Samsung appliance family or reformatted by region/model year. Match the appliance type and exact model before applying a meaning. This page therefore keeps **Microwave E-31** separate from same-looking codes used by other Samsung appliance families.
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