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Error code reference

Viking Dishwasher Error Code 3-2

Pump Flow Error

Viking codesViking dishwasher codes

Pump Flow Error - control detects insufficient/inconsistent water flow through the wash system and will not allow flow through heater to activate (service cycle only).

First step from the service manual

Verify water is fully turned on to dishwasher.

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

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What 3-2 means on a Viking dishwasher

The Viking dishwasher error code 3-2 indicates a Pump Flow Error, meaning the control board has detected insufficient or inconsistent water flow through the wash system. This error is specific to the service cycle and is tied directly to a safety interlock: when the control cannot confirm adequate flow, it will not allow the flow-through heater to activate. This prevents the heating element from running dry, which could cause component damage or a fire hazard.

The wash pump is the primary component under scrutiny when this code appears. The control monitors flow as a condition for enabling the heater circuit, so anything that restricts, interrupts, or reduces water movement through the system can trigger the 3-2 code. Common culprits include low water supply pressure, a kinked or restricted inlet line, a failed or partially failed wash pump motor, and clogged filters or spray arm ports that reduce circulation pressure below the threshold the control expects.

Diagnosis should begin at the water supply itself. Confirm the shutoff valve beneath the sink is fully open and that the inlet hose is not kinked or obstructed. If the supply checks out, the next focus shifts to the internal wash system: inspect the pump inlet filter, the sump area, and the spray arms for blockages. If flow remains insufficient after clearing obstructions, the wash pump motor or its associated wiring and connectors may need evaluation.

Source: manufacturer service documentation.

Common causes of 3-2

  1. 01

    Water supply valve not fully open

    Wiring / connection

    If the shutoff valve under the sink is partially closed, water pressure to the dishwasher will be reduced and the control may detect insufficient flow. Check that the valve is turned fully open before investigating internal components.

  2. 02

    Clogged sump filter or pump inlet screen

    Wiring / connection

    Debris, food particles, and mineral buildup can restrict water from reaching the wash pump, reducing flow below the threshold required to activate the heater circuit. Remove and clean the filter assembly and inspect the pump inlet area.

  3. 03

    Blocked or restricted spray arms

    Wiring / connection

    Clogged spray arm ports reduce circulation pressure throughout the wash system, which can register as a flow error. Remove the spray arms and clear any obstructions from the ports with a small pick or toothpick.

  4. 04

    Failed or weakened wash pump motor

    Part replacement

    A wash pump motor that is failing, seized, or drawing insufficient current will not generate adequate water flow even when the supply is unobstructed. This typically requires testing the motor for proper operation and may require replacement.

  5. 05

    Kinked or restricted inlet supply hose

    Wiring / connection

    A hose that has been pinched behind the unit or bent sharply during installation will reduce incoming water volume regardless of how fully the supply valve is open. Pull the dishwasher out slightly and inspect the full length of the inlet hose.

See the test procedure for each cause

Frequently asked questions about 3-2

What does 3-2 mean on a Viking dishwasher?
Error code 3-2 on a Viking dishwasher indicates a Pump Flow Error. The control board has detected that water flow through the wash system is insufficient or inconsistent. As a protective measure, the control will not allow the flow-through heater to activate until proper flow is restored. This code is triggered during the service cycle.
How do I fix error code 3-2 on my Viking dishwasher?
Start by confirming the water supply valve is fully open and the inlet hose is not kinked. Next, clean the sump filter and check the spray arms for blockages. If those steps do not resolve the issue, the wash pump motor may need to be tested and potentially replaced. Resolving the underlying flow restriction is the only way to clear this error.
Will resetting my Viking dishwasher clear the 3-2 error code?
A reset may temporarily clear the code from the display, but the error will return during the next service cycle if the underlying flow problem has not been corrected. The control is designed to recheck flow conditions each time the cycle runs, so the root cause must be addressed to prevent the code from reappearing.
Is it safe to run my Viking dishwasher with a 3-2 error code?
The dishwasher is designed to block heater activation when this error is present, which is a built-in safety feature to prevent the heater from running without adequate water flow. You should not attempt to bypass this protection. Identify and correct the flow issue before running the unit through a normal wash cycle.
How much does it cost to repair a Viking dishwasher showing error code 3-2?
If the fix is as simple as clearing a clogged filter or fully opening the supply valve, there may be no parts cost at all. If the wash pump motor has failed and needs replacement, parts and labor costs typically range from $150 to $400 or more depending on the specific model and local service rates. Getting a diagnostic visit from a qualified technician will give you a more precise estimate for your situation.

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