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Dishwasher displays H2O fault code indicating the unit is not detecting sufficient water fill; the failed pressure sensor cannot relay correct water level data to the control board.
Drain pump runs continuously for several minutes before the dishwasher powers off; a clogged or failed sensor tricks the control board into a permanent drain loop.
Wash cycle fails to initiate because the pressure sensor cannot confirm the tub is empty or properly filled, preventing the control board from advancing to the next cycle stage.
Dishwasher takes in too much or too little water, resulting in poor cleaning performance or water leaking from the door due to excessive water levels.
Dishwasher stops unexpectedly during a wash or rinse cycle when the pressure sensor sends an erroneous signal caused by calcium deposits, soap residue buildup, or sensor membrane failure.
💡 Pro Tip: How to Confirm Your Pressure Sensor Has Failed
Your part is likely the culprit if you notice any of the following:
⚠️ Dishwasher displays H2O or FTD error code and shuts down mid-cycle
⚠️ Drain pump runs continuously for several minutes then dishwasher powers off
⚠️ Dishwasher overfills or underfills with water, causing poor cleaning results
⚠️ Water leaks from the door due to excessive fill, or cycle fails to start at all
Before ordering, remove the toe-kick and inspect the existing sensor. Black sludge or calcium buildup over the sensor inlet is common — try cleaning it first. If cleaning does not resolve the H2O or FTD code after one full cycle, the sensor membrane has failed and replacement is required.
📦 What's in the Box
✅ 1× Dishwasher Pressure Sensor Assembly WD21X25468 (approx. 1.45 × 2.5 × 2.62 in, 2.08 oz)
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Disclaimer: Compatibility information, part numbers, and model fitment data on this page are sourced from manufacturer databases and third-party references. While we strive for accuracy, please verify your appliance model number before ordering. Heima is not responsible for errors or omissions in compatibility listings.
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