Frigidaire Range Error Code E-27

E-27 means the control board has detected an open circuit in the oven temperature sensor, specifically a resistance reading above 2950 ohms. The oven sensor is a probe inside the oven cavity that normally reads around 1080 ohms at room temperature. When resistance climbs too high, the control board cannot accurately monitor oven temperature and triggers this code to prevent unsafe operation.

You should not attempt to use the oven baking or broiling functions while E-27 is active. The control board cannot regulate oven temperature without a functioning sensor, which means the oven could overheat or fail to heat properly. Surface burners on a gas or electric range may still operate, but the oven should remain off until the fault is corrected.

If only the oven temperature sensor needs replacement, parts typically range from $20 to $60 depending on the specific model, and the repair is manageable without professional help. If a technician is needed, labor plus parts could bring the total to $100 to $250. A faulty control board is the most expensive possibility, with parts and labor potentially ranging from $200 to $400 or more.

Many DIYers can resolve E-27 by testing and replacing the oven temperature sensor. The process involves disconnecting power, removing the back panel, unplugging the sensor harness from the control board, and checking resistance with a multimeter. If the sensor reads significantly above 1080 ohms at room temperature, replacing it is a relatively straightforward repair that typically requires only a screwdriver and basic tools.

Disconnecting power briefly may temporarily clear the display, but E-27 will return as soon as the oven is used if the underlying sensor or wiring problem is not repaired. The code is triggered by an out-of-range resistance reading that the control board detects every time it attempts to monitor oven temperature. A reset is useful for confirming the fault is active, but it is not a fix.