Error code reference

Whirlpool Dishwasher Error Code 6-1

Low or no water

Whirlpool codesWhirlpool dishwasher codes

Low or no water — mechanical problem such as no water to dishwasher, bowls capturing wash water, improper drain connection causing siphoning, water leaking, fill valve or water line plugged, or overfill switch stuck.

First step from the service manual

Verify water supply is turned on and supply line is adequate.

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

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What 6-1 means on a Whirlpool dishwasher

The Whirlpool dishwasher error code 6-1 indicates the control board detected insufficient or no water entering the tub during the fill phase. Specifically, the control monitors how long it takes for the water level to reach the required point via the float switch or pressure sensor. When fill time exceeds the programmed threshold without adequate water detected, the board triggers a 6-1 and halts the cycle. This is classified as a mechanical fill problem, meaning the issue lies in the physical water supply path rather than an electrical sensor failure.

For homeowners, this means your dishwasher tried to fill with water at the start of a cycle but could not get enough water in to run safely. The most common reasons are a closed or partially closed water supply valve under the sink, a kinked or pinched water supply line, or a clogged inlet water valve screen. Overloading the dishwasher with large items that block the spray arms can also interfere with fill detection in some configurations.

Before assuming a part has failed, check that the hot water supply valve beneath the sink is fully open and that the supply line has no kinks or restrictions. If water supply is confirmed adequate and the error persists, the inlet water valve itself may be faulty and restricting flow.

Source: manufacturer service documentation.

Common causes of 6-1

  1. 01

    Closed or restricted water supply valve

    Wiring / connection

    The hot water shut-off valve under the sink is fully or partially closed, preventing adequate water flow to the dishwasher. This is the first thing to check and requires no parts to fix.

  2. 02

    Kinked or pinched inlet supply line

    Wiring / connection

    The braided or plastic supply line connecting the shut-off valve to the dishwasher inlet is bent or compressed, restricting water flow below the level the control board expects during fill.

  3. 03

    Clogged inlet water valve screen

    Wiring / connection

    A fine mesh screen inside the water inlet valve body collects sediment and mineral deposits over time. A blocked screen reduces flow enough to trigger a 6-1 error even when supply pressure is normal.

  4. 04

    Failed inlet water valve

    Part replacement

    The solenoid-operated water inlet valve controls water flow into the tub. If the solenoid coil burns out or the valve body becomes mechanically stuck closed, the dishwasher cannot fill and will display error code 6-1.

See the test procedure for each cause

Frequently asked questions about 6-1

What does error code 6-1 mean on a Whirlpool dishwasher?
Error code 6-1 on a Whirlpool dishwasher means the control board detected a low water or no water condition during the fill cycle, and has classified it as a mechanical problem with the water supply. The dishwasher monitors how long filling takes and shuts down when the required water level is not reached in time. This points to a restriction or failure somewhere in the inlet water path, from the supply valve to the inlet water valve itself.
How do I fix error code 6-1 on a Whirlpool dishwasher?
Start by opening the hot water shut-off valve under the sink fully and checking the supply line for kinks. Turn the dishwasher off, wait 60 seconds, and restart a cycle to see if the error clears. If it returns, disconnect the supply line from the dishwasher's inlet valve and inspect the mesh screen inside the valve inlet port for sediment buildup. A blocked screen can be cleaned carefully with a soft brush. If the screen is clear and supply pressure is adequate, the inlet water valve solenoid has likely failed and needs to be replaced.
Can I still use my Whirlpool dishwasher when the 6-1 code is showing?
No, the dishwasher will not run a wash cycle while error code 6-1 is active because it does not have enough water to operate safely. Running the pump without adequate water can damage the wash motor and heating element. The cycle will stop and the code will continue displaying until the fill problem is resolved.
How much does it cost to repair a Whirlpool dishwasher with a 6-1 error?
If the fix is simply opening the supply valve or straightening a kinked line, the repair costs nothing. Cleaning the inlet valve screen is also free if you do it yourself. If the inlet water valve needs replacement, the part typically costs between $20 and $60 depending on the model, and a repair technician will usually charge $80 to $150 in labor to replace it. Diagnosing and fixing a 6-1 error is generally one of the lower-cost dishwasher repairs.
Why does my Whirlpool dishwasher keep showing 6-1 even after I checked the water supply?
If the supply valve is fully open, the supply line is clear, and the inlet valve screen is clean but error code 6-1 persists, the inlet water valve solenoid has most likely failed and is no longer opening when energized. You can test the solenoid with a multimeter for continuity. A reading of open circuit or far outside the normal resistance range for your model confirms the valve needs replacement. If the valve tests good electrically, the control board may not be sending the correct signal to open it, though this is a less common cause.

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