F9E4
Whirlpool Drain Sensor / Pressure Switch Fault (on some models)

Dishwasher displays F9E4; drain pump may run at unexpected times; intermittent draining issues.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Faulty pressure sensor, Blocked pressure hose, Wiring issue to sensor

How to Fix / Troubleshooting

Safety First: Turn off power before accessing internal components.

  • Locate pressure sensor: Some Whirlpool models use a pressure sensor connected to the sump via a small hose.
  • Inspect hose: Check the small hose for kinks, clogs, or water trapped where it should be air-filled. Clean or replace if blocked.
  • Check sensor connector: Ensure the sensor wiring is secure and not corroded.
  • Replace sensor: If the hose is clear and wiring is good, replace the pressure sensor with the correct part.
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Repair Difficulty

Hard 4/5

Required Part

Water Level / Pressure Sensor
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