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Error code reference

Viking Dishwasher Error Code NORMAL WASH + LED2

Pressure Sensor Disconnect

Viking codesViking dishwasher codes

Pressure Sensor Disconnect - pressure sensor (HUBA) harness connection failure.

First step from the service manual

Check the pressure sensor (HUBA) harness connection.

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

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What NORMAL WASH + LED2 means on a Viking dishwasher

The NORMAL WASH + LED2 error on a Viking dishwasher indicates a Pressure Sensor Disconnect fault. This error is triggered when the control board loses communication with the HUBA pressure sensor, which is responsible for monitoring water level inside the wash tub. The HUBA sensor works by detecting changes in air pressure within a sealed chamber connected to the tub, allowing the control board to regulate fill cycles accurately. When the harness connection between the sensor and the control board is broken, corroded, or improperly seated, the board can no longer receive valid pressure readings and halts operation to prevent overfilling or dry running.

The most common point of failure for this fault is the wiring harness that links the HUBA pressure sensor to the main control board. Connectors can loosen over time due to vibration during wash cycles, or the terminals inside the connector housing can corrode from exposure to steam and moisture within the dishwasher cabinet. A partial disconnect, where the harness appears seated but one or more terminals have backed out, can produce an intermittent version of this fault that appears and clears without obvious cause.

Diagnosis should begin with a physical inspection of the HUBA pressure sensor harness at both ends, checking the connector at the sensor body and at the control board. Look for bent or pushed-back terminals, corrosion, moisture intrusion, or visible wire damage along the harness routing. If the connection appears intact but the fault persists, the sensor itself or the harness may require continuity testing or replacement.

Source: manufacturer service documentation.

Common causes of NORMAL WASH + LED2

  1. 01

    Loose or disconnected harness connector

    Wiring / connection

    The wiring harness plug connecting the HUBA pressure sensor to the control board may have worked loose due to vibration over time. Check both ends of the harness and press each connector firmly until it clicks into place.

  2. 02

    Corroded or damaged connector terminals

    Part replacement

    Steam and moisture inside the dishwasher cabinet can corrode the metal terminals inside the harness connectors, causing poor or intermittent electrical contact. Inspect the terminals for green or white oxidation and clean or replace the connector as needed.

  3. 03

    Damaged wiring harness

    Part replacement

    The harness wires may be pinched, chafed, or broken along their routing path inside the cabinet, interrupting the signal between the sensor and the board. Trace the full harness length and look for visible insulation damage or wire breaks.

  4. 04

    Faulty HUBA pressure sensor

    Part replacement

    If the harness and connectors check out with no visible defects, the HUBA sensor itself may have failed internally, preventing proper signal transmission regardless of connection integrity.

See the test procedure for each cause

Frequently asked questions about NORMAL WASH + LED2

What does NORMAL WASH + LED2 mean on a Viking dishwasher?
This error code indicates a Pressure Sensor Disconnect fault. The control board has lost its connection to the HUBA pressure sensor, which monitors water level in the tub during the wash cycle. The fault is tied specifically to a harness connection failure between that sensor and the board. The dishwasher will not operate normally until the connection issue is identified and corrected.
How do I fix the NORMAL WASH + LED2 error on my Viking dishwasher?
Start by locating the HUBA pressure sensor and inspecting its wiring harness connection at both the sensor end and the control board end. Press each connector firmly to ensure it is fully seated and check the terminals for corrosion or damage. If the connectors look clean and secure but the fault remains, the harness or the pressure sensor itself may need to be tested for continuity and potentially replaced.
Will resetting my Viking dishwasher clear the NORMAL WASH + LED2 error?
A power reset may temporarily clear the error display, but the fault will return if the underlying harness connection problem has not been fixed. Because this code reflects an active electrical disconnect rather than a one-time glitch, the physical connection to the HUBA sensor must be inspected and corrected to resolve the error permanently.
Is it safe to keep using my Viking dishwasher when the NORMAL WASH + LED2 error is showing?
Running the dishwasher while this fault is active is not recommended. The pressure sensor is responsible for monitoring water level, and without reliable sensor input, the control board cannot properly regulate the fill cycle. This could lead to underfilling or overfilling conditions that may affect wash performance or potentially cause water-related issues.
How much does it cost to repair the NORMAL WASH + LED2 error on a Viking dishwasher?
If the fix is simply reseating a loose harness connector, there may be no parts cost at all, with any expense limited to a service call fee, which typically ranges from $75 to $150 depending on your location. If the harness or HUBA pressure sensor needs replacement, total repair costs including parts and labor generally range from $150 to $350. Costs vary based on local labor rates and parts availability.

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