mypros+
Error code reference

Frigidaire Refrigerator Error Code EH

Humidity sensor failure

Frigidaire codesFrigidaire refrigerator codes

Humidity sensor failure — problem with the humidity sensor.

First step from the service manual

Check terminals under top hinge cover and PCB CN2

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for EH.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What EH means on a Frigidaire refrigerator

The EH error code on a Frigidaire refrigerator indicates a humidity sensor failure. The humidity sensor monitors moisture levels inside the refrigerator compartment, typically to manage functions like automatic defrost cycles or fresh food preservation systems. When the control board detects an out-of-range signal or a complete loss of signal from this sensor, it logs the EH code to alert the technician that the sensor circuit is compromised.

Diagnosis begins at the sensor terminals located under the top hinge cover and at connector CN2 on the main PCB. These are the two primary points where the sensor circuit can break down. The top hinge cover conceals the wiring harness connection point for the humidity sensor, making it a common location for loose, corroded, or physically damaged terminals. CN2 on the PCB is the board-side connector that receives the sensor signal, and a faulty connection here can mimic a failed sensor.

The root cause can be a genuinely failed humidity sensor, damaged wiring between the sensor and PCB, or a defective main control board. Corrosion at connector terminals is a frequent culprit, especially in units that have experienced excessive moisture or have been in service for several years. Proper diagnosis requires inspecting both connection points, checking continuity through the sensor wiring harness, and verifying that CN2 is fully seated and free of corrosion before condemning the sensor or control board.

Source: manufacturer service documentation.

Common causes of EH

  1. 01

    Loose or corroded sensor connector terminals

    Wiring / connection

    The terminals under the top hinge cover can become loose, corroded, or oxidized over time. Inspecting and reseating or cleaning these terminals is the first step and often resolves the error without replacing any parts.

  2. 02

    Faulty CN2 connector on the PCB

    Wiring / connection

    The CN2 connector on the main control board can develop a poor connection due to corrosion or an unseated connector. Visually inspecting and firmly reseating this connector may clear the fault.

  3. 03

    Failed humidity sensor

    Part replacement

    The humidity sensor itself can fail internally, producing an out-of-range or absent signal to the control board. If wiring and connectors check out, the sensor unit will need to be replaced.

  4. 04

    Damaged wiring harness

    Part replacement

    The wiring between the humidity sensor and the PCB can suffer from chafing, pinching, or breaks, particularly near the top hinge area where the harness is routed. A continuity check of the harness will confirm this.

  5. 05

    Defective main control board

    Part replacement

    If the sensor and all associated wiring test correctly, the main PCB itself may be unable to properly read the sensor signal. Board replacement is typically a last resort after all other components are confirmed good.

See the test procedure for each cause

Frequently asked questions about EH

What does EH mean on a Frigidaire refrigerator?
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.
Can I fix the EH error code myself?
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.
Is it safe to use my Frigidaire refrigerator while the EH code is displayed?
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.
Will resetting my Frigidaire refrigerator clear the EH error code?
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.
How much does it cost to repair the EH error on a Frigidaire refrigerator?
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.

Related Frigidaire refrigerator codes

All Frigidaire refrigerator codes
View all 100 Frigidaire refrigerator codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass