Frigidaire Refrigerator Error Code EH

The EH code on a Frigidaire refrigerator indicates a humidity sensor failure. The control board has detected that the humidity sensor signal is out of range or absent. Diagnosis starts by checking the sensor terminals under the top hinge cover and the CN2 connector on the main PCB. The cause can be a loose connection, damaged wiring, a failed sensor, or a defective control board.

The EH code relates to the humidity sensor and does not directly indicate a cooling system failure, so the refrigerator may continue to cool normally in many cases. However, functions that depend on humidity sensing, such as certain preservation or defrost features, may not operate correctly. You should monitor your food temperatures and address the error promptly to avoid potential food safety issues if refrigerator performance degrades.

Repair costs vary depending on the root cause. If the fix is simply cleaning or reseating a connector, you may have little to no parts cost. Replacing the humidity sensor typically runs in the range of $20 to $80 for the part. If the main control board requires replacement, parts alone can range from $100 to $300 or more, with additional labor costs if a technician performs the repair.

A knowledgeable DIYer can begin by inspecting and reseating the sensor terminals under the top hinge cover and the CN2 connector on the PCB, as a loose connection is a common cause. If those connections are clean and secure, further diagnosis requires testing continuity through the wiring harness, which demands basic electrical knowledge and a multimeter. Replacing the sensor or control board is within reach for experienced DIYers, but if you are unsure about working with appliance wiring, a professional technician is recommended.

A power reset may temporarily clear the EH code, but if the underlying problem with the humidity sensor or its wiring still exists, the code will return. Resetting does not repair a failed sensor, corroded terminals, or a damaged wiring harness. The code should be treated as a diagnostic alert that requires physical inspection and repair of the sensor circuit.