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Error code reference

Kenmore Dishwasher Error Code 1-1

Control detected K400 pilot relay stuck closed.

Kenmore codesKenmore dishwasher codes

Control detected K400 pilot relay stuck closed.

First step from the service manual

Unplug dishwasher or disconnect power. Check all loads on K400 pilot relay for shorts. Replace control and all shorted components.

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

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What 1-1 means on a Kenmore dishwasher

Error code 1-1 on a Kenmore dishwasher indicates the control board has detected that the K400 pilot relay is stuck in the closed position. A relay stuck closed means the relay is continuously passing current even when the control has not commanded it to do so. This prevents the control from properly switching off the loads connected to that relay, which is a fault condition the board recognizes and flags immediately. The diagnostic sequence requires identifying all components powered through the K400 pilot relay, testing each for short circuits, and replacing the control board along with any shorted components.

For a homeowner, think of the K400 pilot relay as an electrical switch on the control board that should open and close on command. When it gets stuck closed, it is like a light switch that cannot turn off. The dishwasher detects this abnormal condition and stops normal operation to prevent potential damage to wiring, components, or the machine itself. Something downstream of that relay, such as a load like a pump or valve, may have developed a short circuit that is holding the relay in this state.

This error does not resolve itself through a simple reset in most cases. The underlying short in one or more of the K400 relay loads must be identified and corrected. The control board itself also requires replacement as part of the repair, since the relay may be internally damaged from the fault condition.

Source: manufacturer service documentation.

Common causes of 1-1

  1. 01

    Shorted load connected to K400 pilot relay

    Part replacement

    A component powered through the K400 pilot relay, such as a pump, valve, or motor, has developed an internal short circuit. This short draws continuous current through the relay and can hold it in the closed position or cause the control to detect an abnormal closed state.

  2. 02

    Wiring harness short to K400 relay circuit

    Part replacement

    The wiring between the control board and the loads on the K400 pilot relay may have chafed, pinched, or melted insulation causing a short to ground or between conductors. This creates a false closed-circuit condition at the relay even if the individual components are undamaged.

  3. 03

    Failed K400 pilot relay on control board

    Part replacement

    The relay itself on the control board may have failed internally with its contacts welded shut due to electrical arcing or age. In this case, the relay is mechanically or electrically unable to open regardless of the control signal it receives.

  4. 04

    Control board logic failure

    Part replacement

    In some cases, the control board circuitry monitoring the K400 pilot relay may have failed, causing it to incorrectly report the relay as stuck closed even when the relay and its connected loads are functioning normally. This is less common than an actual relay or load fault but requires full control board replacement to resolve.

See the test procedure for each cause

Frequently asked questions about 1-1

What does error code 1-1 mean on a Kenmore dishwasher?
Error code 1-1 means the dishwasher control board has detected that the K400 pilot relay is stuck in the closed position. This relay is responsible for switching power to specific loads within the dishwasher. When the control sees it stuck closed, it halts operation to prevent further damage to the machine or its wiring.
How do I fix error code 1-1 on a Kenmore dishwasher?
Start by unplugging the dishwasher or shutting off its circuit breaker. With power disconnected, test all components connected to the K400 pilot relay for short circuits using a multimeter. Any shorted components must be replaced, and the control board must also be replaced as part of this repair. Because this requires identifying specific relay load circuits on the board and testing individual components, a technician familiar with dishwasher wiring diagrams can complete this more efficiently, but an experienced DIYer with a multimeter can work through it using the wiring diagram for the specific Kenmore model.
Is it safe to use my Kenmore dishwasher when error code 1-1 is showing?
No, you should not continue using the dishwasher with error code 1-1 active. A relay stuck closed means a component or circuit is not being properly controlled, which can lead to components running continuously, overheating, or wiring damage. Stop using the dishwasher and disconnect power until the fault is diagnosed and repaired.
How much does it cost to fix error code 1-1 on a Kenmore dishwasher?
Repair cost depends on which components are shorted. A replacement control board for a Kenmore dishwasher typically runs between $100 and $250 for the part alone. If a pump, inlet valve, or other load component is also shorted and needs replacement, add another $20 to $100 per part. Professional labor adds $100 to $200 depending on your area. If multiple components are shorted, weigh the total repair cost against the age and value of the dishwasher before proceeding.
Will resetting my Kenmore dishwasher clear the 1-1 error code?
A reset will not permanently clear error code 1-1 if the underlying fault is still present. The code will return immediately or after the next cycle attempt because the control board will detect the K400 pilot relay condition again. The short circuit in the relay circuit or its connected loads must be physically found and repaired before the error will clear and stay clear.

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