The **E-28** display on a Samsung oven or range points to **upper cavity sensor shorted**. 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-28**. Search normalization stores it as **E28** 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 codeE28
ApplianceOven & Range
Quick answer
Upper cavity sensor shorted.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so E28 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-28** display on a Samsung oven or range points to **upper cavity sensor shorted**. 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-28**. Search normalization stores it as **E28** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
Depending on the exact model, the control is not receiving an expected sensor signal or the signal is outside its accepted range.
A symptom that fits E-28 is that the appliance can stop a feature, limit operation, or repeat the code during the same stage.
While E-28 is active, the affected function can behave intermittently if the signal or connection is unstable.
The E-28 display becomes more meaningful if e-28 appears on the range/oven and the related cooking, sensing, door, or control function can be limited.
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
Before opening any service area, photograph the code and note the exact operating stage when it appears.
Before requesting service for E-28, verify only user-accessible conditions that can physically affect the monitored function.
As an external check for E-28, 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.
As an external check for E-28, check door/divider/pan placement, vent obstruction, settings, and household power only when relevant.
Before requesting service for E-28, do not perform live high-voltage internal testing; request service if the code reappears.
Important safety warning. 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. If resolving E-28 would require energized internal access, that is the point to hand the diagnosis to a qualified technician.
Get help
When to request repair service
If the code returns, model-specific sensor, harness, connector, and control-board testing is appropriate. A repeatable E-28 event is more useful diagnostically than repeated resets, because it shows when the upper cavity sensor shorted check is failing.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
A single documented power reset can help after an external condition or power event is corrected. If **E-28** returns at the same stage, repeated resets only erase useful evidence and do not repair the cause.
Continue only if the appliance is otherwise safe and the owner-level checks are appropriate. Stop for leakage near electrical parts, smoke, burning odor, arcing, gas concerns, repeated breaker trips, uncontrolled heating, or unsafe temperatures.
Not automatically. Samsung error codes are diagnostic indicators, not part numbers. Confirm the circuit around **E-28** before replacing anything.
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-28** separate from same-looking codes used by other Samsung appliance families.
