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Error code reference

KitchenAid Dishwasher Error Code FLOOD SWITCH ACTIVATED

Flood sensor detected moisture due to lid not sealing, water valve leaking, split spray arm, split inlet/drain hose, blocked drain hose, heater plate…

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What the FLOOD SWITCH ACTIVATED error code actually means

Your KitchenAid dishwasher has detected water leaking somewhere inside the machine where it should not be. This is a safety feature that stops the dishwasher to prevent water damage to your home. You will need to find the source of the leak before the dishwasher can be used again.

Diagnostic procedure

The full FLOOD SWITCH ACTIVATED procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Unplug dishwasher or disconnect power, then remove lid and repair or replace lid or motor assembly.
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Most common causes of FLOOD SWITCH ACTIVATED

Ranked by how often they cause this code
  1. 1Lid Not Sealing Properly
  2. 2Leaking Water Inlet Valve
  3. 3Split or Cracked Spray Arm
  4. 4Damaged or Blocked Drain Hose
  5. 5Heater Plate O-Ring Leak

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Questions people ask about FLOOD SWITCH ACTIVATED

What does FLOOD SWITCH ACTIVATED mean on a KitchenAid dishwasher?
This error means the dishwasher's built-in flood sensor has detected unexpected moisture or water inside the appliance, outside of the normal wash tub area. The machine shuts down automatically to prevent water damage. The sensor can be triggered by a leaking lid seal, faulty water valve, cracked spray arm, damaged hoses, worn heater plate O-rings, or moisture reaching the control board. The underlying leak source must be identified and repaired before the dishwasher will operate normally.
Will resetting the dishwasher clear the FLOOD SWITCH ACTIVATED error?
Resetting the dishwasher by unplugging it or cycling the breaker may temporarily clear the error display, but the code will return as soon as the flood sensor detects moisture again. The error will continue to trigger until the actual leak source is repaired. A reset alone does not fix the underlying problem and should not be treated as a solution.
How much does it cost to repair a KitchenAid dishwasher showing the FLOOD SWITCH ACTIVATED error?
Repair costs vary widely depending on which component is leaking. Replacing a drain or inlet hose typically falls in the lower cost range, while a new water inlet valve, spray arm, or lid assembly will cost more for parts. If the control board has been damaged by moisture exposure, that repair is among the more expensive scenarios. Professional labor adds to the total, so costs can range from around $75 for a simple hose fix to several hundred dollars for board or motor assembly replacement.
Is it safe to use my KitchenAid dishwasher when the FLOOD SWITCH ACTIVATED error is showing?
No, you should not run the dishwasher while this error is active. The flood switch has detected a water leak that could worsen with continued use and may already be near electrical components including the chassis control board. Disconnect power to the appliance immediately and do not restore power until the source of the leak has been found and fully repaired.
How do I start diagnosing the FLOOD SWITCH ACTIVATED error on my KitchenAid dishwasher?
Begin by unplugging the dishwasher or disconnecting it at the circuit breaker to ensure there is no power to the unit. Then remove the lid and inspect the lid seal and motor assembly for damage or signs of water intrusion. From there, check the spray arms, inlet and drain hoses, water valve, and heater plate O-rings for cracks, splits, or deterioration. Look for water trails, mineral deposits, or pooling that can point you toward the leak origin.

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