Viking Dishwasher Error Code Pressure Sensor Disconnect

The Pressure Sensor Disconnect error on a Viking dishwasher indicates that the control board has lost communication with the HUBA pressure sensor, which monitors water level inside the tub. This sensor plays a critical role in the wash cycle by signaling the control board when the correct fill level has been reached, allowing the system to transition from fill to wash mode. When this signal is interrupted or absent, the dishwasher cannot safely proceed and will halt operation to prevent overfill or dry-run conditions.

The most immediate cause to investigate is a disconnected or improperly seated harness connector between the HUBA sensor and the main wiring harness. Vibration during normal operation can loosen these connections over time, and in some cases the connector may have never been fully seated after a previous repair. Beyond the connector itself, the harness wiring should be inspected along its entire run for damage including chafing, pinched sections, or corroded terminals that could interrupt the signal.

If the harness and connectors check out as intact and properly connected, the HUBA pressure sensor itself may have failed internally. Sensor failure can occur due to prolonged exposure to heat and moisture inside the dishwasher cabinet, or simply through normal component aging. A failed sensor will not respond correctly even with a sound electrical connection, and in that case the sensor unit will need to be replaced to restore normal operation.