Frigidaire Refrigerator Error Code E1

E1 indicates a failure in the refrigerator compartment room sensor or its circuit. The control board is unable to receive a valid signal from the R room temperature sensor, which monitors the fresh food section. The issue can originate at the sensor itself, the wiring, or the CN1 connector terminals. The refrigerator may not cool properly until the fault is resolved.

Operating the refrigerator with an active E1 code carries some risk, as the control board may not be able to regulate compartment temperature accurately. Food safety could be compromised if the fresh food compartment is not maintaining proper temperatures. It is best to check actual internal temperatures with a separate thermometer and address the fault promptly.

A power reset may temporarily clear the E1 code, but it will return if the underlying sensor or wiring fault is still present. Unplugging the unit for a few minutes and restoring power can confirm whether the fault is intermittent or persistent. A recurring E1 after reset means the root cause in the sensor circuit must be diagnosed and repaired.

A knowledgeable DIYer can often resolve an E1 error by inspecting and reseating the CN1 connector, checking for visible wiring damage, and testing the sensor with a multimeter. If the sensor reads open or shorted, replacing the thermistor is a straightforward repair. Control board replacement is more complex and may warrant professional service.

If only the CN1 connector needs cleaning or reseating, there may be no parts cost at all. A replacement R room thermistor sensor typically costs between $15 and $50 for the part. If a control board replacement is needed, parts and labor combined can range from $150 to $400 or more depending on the model and service provider.