The **E-27** display on a Samsung oven or range points to **upper cavity sensor open**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **E-27**. Search normalization stores it as **E27** while preserving the characters a homeowner actually sees.
Reviewed by Ethan Mercer · Last reviewed August 17, 2026
Written by
Ethan Mercer Appliance Repair Content SpecialistPublished August 17, 2026Updated August 22, 2026Technically reviewed August 17, 2026
Content status:
Verified
Error codeE27
ApplianceOven & Range
Quick answer
Upper cavity sensor open.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so E27 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
The **E-27** display on a Samsung oven or range points to **upper cavity sensor open**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **E-27**. Search normalization stores it as **E27** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
E-27 can be accompanied by this pattern: the control is not receiving an expected sensor signal or the signal is outside its accepted range.
One clue that supports the E-27 diagnosis is that the appliance can stop a feature, limit operation, or repeat the code during the same stage.
Depending on the exact model, the affected function can behave intermittently if the signal or connection is unstable.
The E-27 display becomes more meaningful if e-27 appears on the range/oven and the related cooking, sensing, door, or control function can be limited.
Why it happens
Possible causes
varies by model/region — cross-region baseline — Upper cavity sensor open
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
For E-27, start by doing this: photograph the code and note the exact operating stage when it appears.
To rule out an accessible cause, check only user-accessible conditions that can physically affect the monitored function.
Before opening any service area, avoid replacing a sensor solely from the display; wiring, connectors, supply conditions, and the control can create the same result.
The next non-invasive check is to record the exact code and model number.
With E-27 recorded, check door/divider/pan placement, vent obstruction, settings, and household power only when relevant.
A safe owner-level check is to do not perform live high-voltage internal testing; request service if the code returns.
Important safety warning. Safety takes priority over clearing E-27. Stop for arcing, repeated breaker trips, uncontrolled heating, damaged wiring, or gas odor. Internal live-voltage and gas-system diagnosis is not a homeowner check.
Get help
When to request repair service
If the code returns, model-specific sensor, harness, connector, and control-board testing is appropriate. In a service visit for E-27, model-specific testing should follow the upper cavity sensor open circuit rather than treating the code as proof of one failed part.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You can try the one reset Samsung documents for the model, but **E-27** 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-27** clears. If there is heat, water, electrical, gas, or food-safety risk, stop and arrange diagnosis.
No. **E-27** tells you which condition or check the control detected. The same display can result from the named component, its wiring, a connector, a supply/airflow/water condition, or the control that reads it.
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 **Oven & Range E-27** separate from same-looking codes used by other Samsung appliance families.
