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Error code reference

Kenmore Dishwasher Error Code 4-5

Control detected diverter disk in sump is missing.

Kenmore codesKenmore dishwasher codes

Control detected diverter disk in sump is missing.

First step from the service manual

1. Unplug dishwasher or disconnect power. 2. Remove lower spray arm, turbo zone assembly, rear feed tube and outlet cover; and verify the round diverter disk is installed.

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

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What 4-5 means on a Kenmore dishwasher

Error code 4-5 on a Kenmore dishwasher indicates the control board has detected that the diverter disk in the sump is missing. The diverter disk is a round plastic component located in the sump assembly at the bottom of the dishwasher tub. Its function is to direct water flow between the upper and lower spray arms during the wash cycle, ensuring proper water distribution throughout the dishwasher. When the control cannot confirm the disk is in place, it halts operation and triggers this fault.

The control detects the diverter disk's presence through the position of the diverter motor and disk assembly. If the disk is physically absent, dislodged, or the detection mechanism cannot register it, the code is generated. Accessing the disk requires removing the lower spray arm, the turbo zone assembly, the rear feed tube, and the outlet cover to expose the sump area and visually confirm whether the disk is installed.

This error most commonly appears after a service visit, filter cleaning, or any interior maintenance where the sump area was accessed and the disk was not properly reinstalled. In some cases the disk can shift out of position during normal operation, particularly if it was not fully seated. A failed diverter motor or damaged disk retention mechanism can also prevent the control from recognizing the component as present even if the disk is physically installed.

Source: manufacturer service documentation.

Common causes of 4-5

  1. 01

    Diverter disk not reinstalled after cleaning

    Wiring / connection

    The most frequent cause is the disk being removed during filter or sump cleaning and not replaced. Inspect the sump area after removing the lower spray arm, turbo zone assembly, rear feed tube, and outlet cover to confirm the disk is present.

  2. 02

    Diverter disk dislodged from proper position

    Wiring / connection

    The disk can shift out of its seated position during operation, especially if it was not fully snapped in place previously. Check that it is correctly seated and secure in the sump.

  3. 03

    Diverter disk physically lost or broken

    Part replacement

    If the disk was inadvertently discarded during maintenance or has cracked and fragmented, it will need to be replaced with a new unit before the dishwasher can operate.

  4. 04

    Faulty diverter motor or position sensor

    Part replacement

    Even with the disk installed, a failed diverter motor or its associated sensor may prevent the control board from registering the disk's presence, triggering the 4-5 code.

See the test procedure for each cause

Frequently asked questions about 4-5

What does 4-5 mean on a Kenmore dishwasher?
Error code 4-5 means the control board has detected that the diverter disk in the sump is missing. The diverter disk is a round component at the bottom of the tub that routes water to the spray arms. The dishwasher will not run while this code is active. You will need to inspect the sump area to confirm the disk is installed and properly seated.
How do I fix error code 4-5 on my Kenmore dishwasher?
Start by unplugging the dishwasher or disconnecting power, then remove the lower spray arm, turbo zone assembly, rear feed tube, and outlet cover to access the sump. Visually confirm the round diverter disk is present and properly seated. If the disk is missing, it will need to be replaced. If the disk is in place and the code persists, the diverter motor or its sensor may need to be inspected.
Is it safe to use my Kenmore dishwasher with a 4-5 error code?
The dishwasher will not complete a wash cycle while the 4-5 code is active, as the control halts operation when the diverter disk is not detected. Do not attempt to bypass the fault. Running the machine without a functioning diverter system would result in improper water distribution and poor wash performance.
How much does it cost to repair a Kenmore dishwasher with a 4-5 error code?
If the diverter disk simply needs to be reseated, there is no parts cost and only your time is involved. If the disk is missing or broken and requires replacement, parts typically range from $15 to $50 depending on the specific model. If the diverter motor has failed, parts and labor combined can range from $100 to $250 or more.
Will resetting my Kenmore dishwasher clear the 4-5 error code?
Resetting the dishwasher by disconnecting power will clear the active fault display, but the code will return as soon as the machine runs a cycle if the underlying issue has not been resolved. The diverter disk must be physically present and correctly installed before the control will allow normal operation to continue.

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