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Error code reference

Maytag Oven Error Code F-40

Induction Power System (IPS) failure (Type 1 or Type 2).

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Induction Power System (IPS) failure (Type 1 or Type 2).

First step from the service manual

Unplug range or disconnect power, check that the cable between the User Interface and the Induction Power Control (IPC) is not damaged and firmly plugged in.

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

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What F-40 means on a Maytag oven

The F-40 error code on a Maytag induction oven signals a failure within the Induction Power System (IPS). This system is responsible for generating and regulating the high-frequency alternating current that powers the induction cooktop elements. The error is categorized as either Type 1 or Type 2, which typically distinguishes between different fault conditions or subsystems within the IPS, such as communication failures versus power delivery faults. The Induction Power Control (IPC) board is the central component involved in this error.

The most common starting point for diagnosis is the communication cable that runs between the User Interface (UI) board and the Induction Power Control board. A loose connector, a pinched wire, or a cable damaged by heat or physical stress can interrupt the signal path between these two components, causing the control system to log an IPS failure. This connection should always be inspected before assuming the IPC board itself has failed.

If the cable and connectors check out as secure and undamaged, the fault likely lies within the IPC board or the User Interface board itself. Internal component failures on the IPC, such as failed power transistors or damaged control circuitry, can produce this code. Because induction systems operate at high voltages and frequencies, a failed IPC board typically requires full replacement rather than component-level repair. Proper power disconnection before any inspection is critical for technician safety.

Source: manufacturer service documentation.

Common causes of F-40

  1. 01

    Loose or damaged IPC-to-UI cable

    Wiring / connection

    The cable connecting the User Interface board to the Induction Power Control board may have come loose or sustained damage. Visually inspect the connectors at both ends and look for pinched, frayed, or heat-damaged wiring.

  2. 02

    Failed Induction Power Control (IPC) board

    Part replacement

    Internal failures on the IPC board, such as burned or shorted power components, can trigger an F-40 fault. A board with visible burn marks, swollen capacitors, or a burned odor is a strong indicator of IPC board failure.

  3. 03

    Failed User Interface (UI) board

    Part replacement

    The UI board initiates and monitors communication with the IPC, and a fault on the UI board can cause the IPS failure code to appear. If cable inspection and IPC replacement do not resolve the error, the UI board should be evaluated.

  4. 04

    Power supply interruption or surge

    Wiring / connection

    A voltage spike or power irregularity can cause the IPC to latch into a fault state and display F-40. Disconnecting power fully and restoring it may clear a transient fault caused by a power event.

  5. 05

    Improperly seated connectors after prior service

    Wiring / connection

    If the oven was recently serviced or moved, connectors related to the IPC may not have been fully reseated. Check all connectors at the IPC board for firm seating and no bent pins.

See the test procedure for each cause

Frequently asked questions about F-40

What does F-40 mean on a Maytag oven?
F-40 indicates a failure in the Induction Power System (IPS), which controls the induction cooktop burners. The fault can be Type 1 or Type 2, pointing to different conditions within the induction power circuitry. It involves the Induction Power Control board and its communication with the User Interface board. The cooktop burners will typically be non-functional while this code is active.
Can I fix the F-40 error myself?
Some causes of F-40 are DIY-accessible, such as reseating a loose cable between the User Interface and the Induction Power Control board. Start by unplugging the range, then inspect that cable for damage and ensure it is firmly connected at both ends. If the cable is intact and the code returns after restoring power, the IPC or UI board likely needs replacement, which involves working near high-voltage components and is better suited to a qualified technician.
Will resetting the oven clear the F-40 code?
Unplugging the oven or disconnecting it from the circuit breaker for several minutes can clear the error if it was triggered by a transient power event. However, if there is an underlying hardware fault, such as a damaged cable or a failed IPC board, the code will return after power is restored. A reset is a useful first step but is not a permanent fix if a component has actually failed.
Is it safe to use my Maytag oven with an F-40 error?
You should not attempt to use the induction cooktop while the F-40 code is active, as the Induction Power System has detected a fault condition. Continuing to operate the range with a known IPS fault could pose a risk of electrical damage to connected components. The oven baking and broiling functions may still operate depending on the specific fault, but the cooktop should be considered out of service until the error is resolved.
How much does it cost to repair a Maytag oven with an F-40 error?
Repair costs depend on which component is at fault. If the issue is simply a loose or damaged cable, cost may be limited to a service call fee, typically in the range of $75 to $150. If the Induction Power Control board requires replacement, parts alone can range from $150 to $400 or more, with total repair costs including labor potentially reaching $250 to $600 depending on your area and service provider.

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