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Error code reference

KitchenAid Range Error Code F02

Welded (stuck closed) element relay detected on the electronic control.

KitchenAid codesKitchenAid range codes

Welded (stuck closed) element relay detected on the electronic control.

First step from the service manual

Unplug range or disconnect power, then with control powered down check continuity across P4-1 or P4-2 (L1) to P5-1 (Broil), P5-3 (Bake), or P5-4 (Convection).

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

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What F02 means on a KitchenAid range

The F02 error code on a KitchenAid range indicates that the electronic control board has detected a welded or stuck-closed relay on one of the heating element circuits. Relays on the control board act as electrically operated switches that send power to the bake, broil, or convection elements. When a relay welds shut, its contacts fuse together and remain closed even when the control sends a signal to open them. This means the element circuit stays energized and the oven cannot safely shut off the affected heating element.

The diagnostic procedure involves disconnecting power to the range entirely, then using a multimeter to check continuity across specific connector pins on the control board. The check is performed between P4-1 or P4-2 (the L1 hot leg) and P5-1 (Broil element), P5-3 (Bake element), or P5-4 (Convection element). If continuity is present with the board unpowered, it confirms the relay contacts have welded closed and current can flow through without any control signal applied.

Welded relay contacts are most commonly caused by high-current draw events such as a short in the heating element, a voltage spike, or repeated high-demand cycling that causes the relay contacts to arc and eventually fuse. The failure is internal to the control board relay itself. Because the stuck relay creates a condition where an element can remain on without command, this fault is treated as a safety issue and should be addressed before the range is returned to service.

Source: manufacturer service documentation.

Common causes of F02

  1. 01

    Welded relay on the electronic control board

    Part replacement

    The most direct cause of F02 is a relay on the control board whose contacts have fused together. Continuity measured between P4-1 or P4-2 and any of the P5 element pins with the board unpowered confirms this failure.

  2. 02

    Shorted heating element causing relay damage

    Part replacement

    A short circuit in the bake, broil, or convection element can draw excessive current through the relay, generating enough heat to weld the contacts. Inspect each element for visible burn marks, cracks, or a reading of near-zero resistance.

  3. 03

    Voltage surge or power event

    Part replacement

    A sudden voltage spike from a power outage, utility fluctuation, or lightning event can cause relay contacts to arc and fuse together. If the fault appeared immediately after a power event, the control board relay is the likely victim.

  4. 04

    Extended high-temperature cycling degrading relay contacts

    Part replacement

    Repeated high-demand use such as frequent self-clean cycles or long baking sessions at maximum temperature can gradually degrade relay contact surfaces until they fuse. This is more common on older units with high cycle counts.

See the test procedure for each cause

Frequently asked questions about F02

What does F02 mean on a KitchenAid range?
F02 means the electronic control board has detected a welded or stuck-closed relay in one of the oven element circuits, either bake, broil, or convection. A relay in this state cannot open to cut power to the element, meaning the element may stay energized even when the oven is off. This is a safety-relevant fault and the range should remain unplugged until the issue is resolved.
Can I fix F02 on my KitchenAid range myself?
A knowledgeable DIYer can perform the initial continuity test at the control board connector pins P4-1 or P4-2 against P5-1, P5-3, or P5-4 to confirm which circuit has the welded relay. If the control board is confirmed faulty, replacing it is a manageable repair involving disconnecting wire harnesses and mounting hardware. However, given the safety implications of a stuck element relay, many technicians recommend professional service for this particular fault.
Is it safe to use my KitchenAid range when F02 is displayed?
No, the range should not be used while F02 is active. A welded relay means an oven element could remain powered without any command from the control, creating a risk of unintended heating or overheating. Keep the range unplugged until the faulty relay or control board has been replaced.
Will resetting the power clear the F02 error code?
Resetting power will not clear F02 if the relay contacts are physically welded together. Because the fault is a mechanical failure of the relay, the control board will detect the same stuck-closed condition as soon as it powers back up and performs its internal checks. The underlying hardware failure must be repaired before the code will clear.
How much does it cost to repair a KitchenAid range showing F02?
Repair costs depend on whether the failed component is the control board alone or if a shorted heating element also caused the relay damage. A replacement electronic control board typically runs in the range of $150 to $350 for the part, with labor adding $100 to $200 if a technician is hired. If a heating element also needs replacement, expect an additional $30 to $100 for that component.

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