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Error code reference

Kenmore Dishwasher Error Code 6-6

Cool water

Kenmore codesKenmore dishwasher codes

Cool water — incoming water under 18°C/65°F.

First step from the service manual

Be sure dishwasher is connected to the hot water supply. Confirm temperature at sink (recommended 49°C/120°F). Instruct customer to run water at sink before running dishwasher. Check all connections and measure resistance in temperature sensing circuit.

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

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What 6-6 means on a Kenmore dishwasher

Error code 6-6 on a Kenmore dishwasher indicates the control board has detected incoming water temperature below 18°C (65°F). The dishwasher monitors water temperature through a temperature sensor in the wash circuit. When the sensor reads water entering the tub that falls beneath this threshold, the control board flags code 6-6 and interrupts normal operation. The diagnostic check covers both the actual water supply temperature and the resistance values in the temperature sensing circuit itself.

For homeowners, this code usually means one of two things: the dishwasher is not receiving hot water, or it received cold water at the start of the cycle. Most household hot water supplies should reach the dishwasher at around 49°C (120°F). If the hot water line has been sitting idle, the water in the pipe is cold and the dishwasher pulls that cold water in first. Running the kitchen sink on hot for a minute or two before starting the dishwasher flushes the cold water out of the line and often resolves the code without any repair needed. If the problem persists after confirming hot water supply and running the sink first, the temperature sensor or its wiring circuit may need inspection.

Source: manufacturer service documentation.

Common causes of 6-6

  1. 01

    Cold water in supply line before cycle start

    Wiring / connection

    When the hot water line has not been used recently, standing cold water in the pipe reaches the dishwasher first. Running the kitchen sink on hot for 60-90 seconds before starting the dishwasher flushes this cold water out and allows the machine to receive water at the proper temperature.

  2. 02

    Dishwasher connected to cold water supply

    Wiring / connection

    If the dishwasher supply line was plumbed to the cold water line rather than the hot water line, incoming water will always be below the minimum temperature threshold and code 6-6 will trigger consistently. Verify the supply connection under the sink.

  3. 03

    Faulty water temperature sensor

    Part replacement

    If the temperature sensor has drifted out of spec or failed, it can report a low temperature reading even when water entering the tub is hot. Measuring resistance across the sensor terminals and comparing to the manufacturer's specification will confirm whether the sensor needs replacement.

  4. 04

    Damaged or open circuit in temperature sensing wiring harness

    Part replacement

    A broken wire, corroded connector, or loose terminal in the harness between the temperature sensor and the control board can cause the board to read an abnormally low or absent signal, triggering code 6-6. Inspecting the harness for visible damage and checking continuity at each connector will identify this fault.

See the test procedure for each cause

Frequently asked questions about 6-6

What does error code 6-6 mean on a Kenmore dishwasher?
Code 6-6 means the dishwasher's control board detected that incoming water temperature is below 18°C (65°F). The machine expects hot water, ideally around 49°C (120°F), and stops the cycle when the temperature sensor reports water that is too cold. This can be caused by cold water sitting in the supply line, an incorrect plumbing connection, or a problem with the temperature sensor itself.
How do I fix error code 6-6 on my Kenmore dishwasher?
Start by running the hot water at your kitchen sink for about 60-90 seconds before starting the dishwasher. This flushes cold standing water out of the supply line so the machine receives water at the correct temperature. Also confirm the dishwasher is connected to the hot water supply line, not the cold. If the code returns after doing both of these, have the temperature sensor and its wiring harness tested for correct resistance values, as the sensor may need replacement.
Can I still use my Kenmore dishwasher when code 6-6 is showing?
The dishwasher will not complete a normal wash cycle while code 6-6 is active because the control board halts operation when incoming water is too cold. Running the dishwasher with cold water also produces poor cleaning and sanitizing results since detergent activation and grease removal depend on hot water. Resolve the water temperature issue before resuming regular use.
How much does it cost to fix a Kenmore dishwasher showing code 6-6?
If the fix is simply running the sink before starting the dishwasher or correcting a plumbing connection, the cost is nothing. If the temperature sensor has failed, the part typically costs $20-$60 depending on the specific Kenmore model, and replacing it is a moderate DIY repair requiring basic tools and accessing the interior of the door or sump area. A service call from a technician to diagnose and replace the sensor generally runs $100-$200 including labor.
Why does my Kenmore dishwasher keep showing 6-6 even after running the hot water?
If the code persists after flushing the hot water line at the sink, the temperature sensor itself is the most likely cause. The sensor may be reading incorrectly even when hot water is present. A technician or experienced DIYer can measure resistance across the sensor terminals and compare the reading to the spec for that model. If the resistance is out of range, replacing the sensor should clear the code. Also check the wiring harness connectors at the sensor for corrosion or loose terminals.

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