E-27 Serious Moderate DIY

Samsung Oven E-27 — Temperature Sensor Open Circuit

Samsung Oven · Error code E-27

What E-27 Means

Older-style display of an open oven temperature sensor circuit. Resistance reads very high (>2950 ohms) versus the expected ~1080 ohms at room temp.

Most Likely Fix

Oven temperature sensor open circuit

PartOven temperature sensor (RTD probe)
Typical cost$20-50
Difficultyeasy
Time30 min

Tools: screwdriver, nut driver, multimeter

Diagnose first: Open sensor wire or failed RTD. Test sensor resistance before replacing - should be ~1080 ohms cold.

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Symptoms

  • E-27 at startup or when bake is selected
  • Oven refuses to heat
  • Sometimes alternates with E-28

Common Causes

1
Open RTD sensor

Sensor element failed open.

2
Open harness wire

Wire between sensor and main PCB broken.

3
Unseated connector

Plug at main PCB backed out.

How to Fix It

  1. Power off at the breaker before working inside.
  2. Locate and unplug the oven temperature sensor.
  3. Measure resistance — should be roughly 1080 ohms at room temp; >2950 ohms confirms an open sensor.
  4. Replace the sensor if open.
  5. Inspect the harness end-to-end for breaks if a new sensor still reads open at the PCB.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Samsung oven temperature sensor View on Amazon→

More Samsung Oven Codes

---- ---- — Invalid Temperature Setting -dC- -dC- — Flex Duo Divider Installed in Single Mode -dE- -dE- — Flex Duo Divider Not Installed bAd LinE Range bAd LinE — Power Connection Error bAd LinE bAd LinE — Bad Power Connection C-10 Range C-10 — Temperature Sensor Reading Error

All Samsung codes → All oven codes →

Verified against manufacturer documentation: hillcountryrepairs.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.