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Error code reference

GE Range Error Code FA

LIN comm error to/from RPSM AUX Board (when equipped).

GE codesGE range codes

LIN comm error to/from RPSM AUX Board (when equipped).

First step from the service manual

Replace AUX Board especially if MAIN Board relays still function.

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

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What FA means on a GE range

The FA error code on a GE range indicates a LIN communication fault between the main control board and the RPSM AUX (auxiliary) board. LIN, which stands for Local Interconnect Network, is a low-speed serial communication protocol used to allow control boards to exchange data signals. When the main board cannot establish or maintain a valid communication link with the AUX board, the FA code is triggered. This error only applies to ranges equipped with the RPSM AUX board configuration.

The AUX board typically handles supplementary relay or sensor functions that support the main control board. A breakdown in LIN communication can stem from a failed AUX board, a wiring harness issue between the two boards, or in rarer cases, a degraded main board that is unable to initiate or sustain the communication signal. Because the FA code is specifically a communication error, physical damage to the connector pins, loose harness connections, or a short in the LIN data line can all produce this fault.

The primary diagnostic guidance is to replace the AUX board, particularly when the main board relays are still functioning normally. Functioning main board relays suggest the main board itself is operational and that the fault is isolated to the AUX board or the communication path to it. Technicians should inspect the wiring harness and connectors between both boards before condemning either component, as intermittent connection issues can mimic a failed AUX board.

Source: manufacturer service documentation.

Common causes of FA

  1. 01

    Failed AUX Board

    Part replacement

    The RPSM AUX board itself has failed and can no longer send or receive LIN communication signals. This is the most likely cause, especially when the main board relays are confirmed to be operating normally.

  2. 02

    Loose or Damaged Wiring Harness

    Wiring / connection

    The harness connecting the main board to the AUX board may have a loose connector, broken wire, or damaged pin that interrupts the LIN data line. Inspect all connectors between the two boards for corrosion, looseness, or visible damage.

  3. 03

    Short in the LIN Communication Line

    Wiring / connection

    A short circuit in the LIN data wire between the main board and AUX board can prevent communication from being established. Check the wiring for chafing, pinching, or contact with metal surfaces.

  4. 04

    Failed Main Control Board

    Part replacement

    In less common cases, the main board may be unable to initiate the LIN communication signal even though its relays still function. If replacing the AUX board and verifying the wiring does not resolve the FA code, the main board should be evaluated.

See the test procedure for each cause

Frequently asked questions about FA

What does FA mean on a GE range?
The FA code on a GE range indicates a LIN communication error between the main control board and the RPSM AUX auxiliary board. The two boards are unable to exchange data signals properly. This code only appears on ranges that are equipped with the AUX board. The fault is most commonly traced to the AUX board itself or the wiring connecting the two boards.
Can I fix the FA error code myself on a GE range?
A knowledgeable DIYer can check the wiring harness and connectors between the main board and AUX board for visible damage or loose connections, which requires no parts. However, if the AUX board itself has failed, replacing it requires identifying the correct part for your specific model and safely accessing the internal electronics of the range. If you are not comfortable working with appliance control boards, a qualified technician is recommended.
Is it safe to use my GE range when the FA error code is displayed?
The FA code is a communication fault between internal control boards, and its effect on range operation can vary. Some functions may work normally while others may not respond correctly, since the AUX board supports supplementary functions. It is best to avoid relying on the range until the fault is diagnosed and resolved, as unpredictable control behavior can pose a safety concern.
How much does it cost to fix an FA error on a GE range?
If the repair requires replacing the RPSM AUX board, parts alone can range from roughly $50 to $200 or more depending on the specific model. Adding professional labor, the total repair cost typically falls in the range of $150 to $400. If the fault is caused by a loose or damaged wiring harness connection, the repair cost may be significantly lower.
Will resetting my GE range clear the FA error code?
Resetting the range by cutting power at the breaker for a few minutes may temporarily clear the FA code, but if the underlying cause is a failed AUX board or a damaged wiring harness, the error will return. A reset is a reasonable first step to determine whether the fault is intermittent, but a persistent FA code requires physical diagnosis and repair of the affected components.

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