Samsung Oven E-27 Error Code - Causes & Fix

Samsung Oven E-27 Error Code — What It Means

E-27 is an open circuit fault on the Samsung oven temperature sensor. The board sends a reference through the sensor and got no return, so it reads the circuit as broken.

This is almost always the sensor itself or its wiring. A good sensor reads about 1080 ohms at room temperature. An open reading means the probe element or a harness lead has failed.

Jump to Fix

Common Causes

• Open temperature sensor The probe element has failed internally and shows no continuity.
• Broken harness lead A cut or chafed wire between the sensor and the board breaks the loop the board expects.
• Disconnected sensor plug A connector that has backed out at the sensor or the board leaves the circuit open.
• Corroded connector pins Oxidized pins raise resistance until the board reads the path as open.
• Control board input fault Less often the board sensing circuit fails and reports a good sensor as open.

Step-by-Step Fix

1. Cut power at the breaker for one minute, restore it, and see if E-27 returns.
2. Pull the range and remove the back panel to reach the sensor harness.
3. Unplug the temperature sensor connector and check the pins for corrosion or a loose fit.
4. Set a multimeter to ohms and measure the sensor. Expect about 1080 ohms at room temperature.
5. Replace the sensor if it reads open or no continuity.
6. Trace the harness for a break and reseat the connector at both ends.
7. If the sensor and wiring test good, suspect the control board input.

Parts Often Needed

When to Call a Pro

If the sensor reads in spec and the harness is intact, the open is inside the board sensing circuit. Board work is harder to diagnose, so have a tech confirm it before you order a replacement board.