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Error code reference

Frigidaire Freezer Error Code CE

Communication error

Frigidaire codesFrigidaire freezer codes

Communication error — communication was never achieved at power up or lost communication between main board and UI board during normal system run.

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What CE means on a Frigidaire freezer

The CE error code on a Frigidaire freezer indicates a communication failure between the main control board and the user interface (UI) board. This communication link is established at the moment the appliance powers up, and the system continuously monitors it during normal operation. If the main board cannot establish initial contact with the UI board at startup, or if that link drops at any point during a running cycle, the CE code is triggered and displayed.

The communication between these two boards typically occurs over a serial data line or a dedicated communication bus that carries status signals, input commands, and operational feedback in both directions. A failure can be caused by a wiring harness that has become loose, corroded, or physically damaged between the two boards. Connector pins that have backed out of their housing or accumulated oxidation can interrupt the signal path without any visible component failure.

In some cases, the fault lies within one of the boards themselves rather than in the wiring. A failed main control board may not be able to initialize or sustain the communication protocol, and a defective UI board may fail to respond to the handshake signal sent at power up. Before replacing any boards, technicians should carefully inspect all wiring and connectors in the communication circuit, reseat all harness connections, and verify that the power supply to both boards is stable and within spec.

Source: manufacturer service documentation.

Common causes of CE

  1. 01

    Loose or disconnected wiring harness

    Wiring / connection

    The connector linking the main board to the UI board may have worked loose due to vibration or handling. Inspect and firmly reseat all harness connectors on both boards.

  2. 02

    Corroded or damaged connector pins

    Wiring / connection

    Pin corrosion or physical damage inside a connector can interrupt the communication signal even when the connector appears seated. Check each pin for oxidation, bending, or backing out of the housing.

  3. 03

    Faulty UI board

    Part replacement

    If the UI board has an internal failure, it will not respond to the communication handshake sent by the main board at power up. Replacing the UI board resolves the error if wiring checks out.

  4. 04

    Faulty main control board

    Part replacement

    A defective main board may be unable to initiate or maintain the communication protocol with the UI board. This is typically diagnosed after wiring and the UI board have been ruled out.

  5. 05

    Power supply instability to the boards

    Wiring / connection

    Insufficient or fluctuating voltage reaching one or both boards can prevent stable communication from being established or maintained. Verify that supply voltage to each board is within the expected operating range.

See the test procedure for each cause

Frequently asked questions about CE

What does CE mean on a Frigidaire freezer?
CE stands for communication error. It means the main control board and the user interface board were unable to establish or maintain a communication link. This can occur at the moment the freezer powers on or at any point during normal operation. The fault points to a wiring, connector, or control board issue.
Can I fix the CE error on my Frigidaire freezer myself?
Some causes of the CE error are DIY-friendly. Start by unplugging the freezer, then inspect and firmly reseat the wiring harness connectors between the main board and the UI board. If the connections look corroded or damaged, cleaning or replacing the connector may resolve the issue. If the fault lies in one of the control boards, board replacement is more involved and may require a technician.
Will resetting the freezer clear the CE error code?
Unplugging the freezer for a few minutes and restoring power can clear the CE code temporarily if the fault was caused by a transient signal glitch. However, if there is an underlying wiring or board problem, the code will return. A reset alone is not a repair and should be followed by a thorough inspection of the communication circuit.
Is it safe to keep using my Frigidaire freezer when the CE code is showing?
A CE error means the main board and display panel are not communicating properly, which can affect your ability to monitor and control the freezer's temperature settings. The freezer may or may not continue cooling depending on how the control boards respond to the fault. To protect stored food, it is best to address the error promptly rather than continuing to operate the unit without diagnosis.
How much does it cost to repair a CE error on a Frigidaire freezer?
Repair costs depend on the root cause. If only a harness connection needs to be reseated or cleaned, there may be no parts cost involved. A replacement UI board typically runs in the range of $50 to $150 in parts, while a main control board can range from $100 to $250 or more. Adding a technician's labor charge will increase the total cost depending on your area and service provider.

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