Repair Riot

Dishwasher Not Draining Water in Bottom

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Quick answer

Turn off power and water. Check the drain hose for clogs, clean the filter, and inspect the pump. If water remains, the drain pump or float switch may need repair.

Confirm the symptom

Tools and prep

Step-by-step troubleshooting

  1. Check for Standing Water
    Do: Open the dishwasher and look for water pooled in the bottom.
    Observe: Water is present after a completed cycle.
    Means: Drainage issue is confirmed.
    Next: Clean the filter and drain hose.
  2. Clean the Filter
    Do: Locate and remove the filter (usually at the bottom of the tub). Rinse it under running water.
    Observe: Filter is clogged with debris.
    Means: Clogged filter is likely the cause.
    Next: Check the drain hose for clogs.
  3. Inspect the Drain Hose
    Do: Locate the drain hose (connects to the sink or garbage disposal). Check for kinks, clogs, or blockages.
    Observe: Hose is clogged or kinked.
    Means: Drain hose issue is preventing water from draining.
    Next: Unclog or replace the drain hose.
  4. Use a Plunger or Vacuum
    Do: Place a plunger over the drain or use a wet/dry vacuum to clear stubborn clogs.
    Observe: Water drains after plunging or vacuuming.
    Means: Clog was successfully removed.
    Next: Run a test cycle.
  5. Inspect the Drain Pump
    Do: Locate the drain pump (usually near the bottom of the dishwasher). Check for debris or damage.
    Observe: Pump is clogged or damaged.
    Means: Drain pump failure may require replacement.
    Next: Replace the drain pump if damaged.
  6. Check the Float Switch
    Do: Look for the float switch (if your model has one). Ensure it moves freely and is not stuck.
    Observe: Float switch is stuck or damaged.
    Means: Float switch malfunction may prevent drainage.
    Next: Replace the float switch.
  7. Run a Test Cycle
    Do: Reconnect power and water. Run a short cycle to see if water drains properly.
    Observe: Water drains completely.
    Means: Issue is resolved.
    Next: Monitor for recurring issues.
  8. Check for Error Codes
    Do: Consult the user manual to interpret any error codes related to drainage.
    Observe: Error code indicates a specific issue (e.g., drain pump failure).
    Means: Error code provides guidance for further action.
    Next: Address the specific issue indicated by the error code.

Common causes

CauseLikelihoodDifficultyPart often needed
Clogged Filter
Food particles and debris can block the filter, preventing proper drainage.
CommonEasyDishwasher Filter
Clogged Drain Hose
Grease, food particles, or mineral buildup can block the drain hose.
CommonEasy–MediumDrain Hose
Faulty Drain Pump
A malfunctioning drain pump cannot push water out of the dishwasher.
SometimesMediumDrain Pump
Stuck Float Switch
A stuck float switch can prevent the dishwasher from draining to avoid overflow.
SometimesMediumFloat Switch
Kinked or Blocked Hose
A kink or blockage in the drain hose can stop water from flowing out.
CommonEasyDrain Hose
Improper Installation
Incorrect installation of the drain hose or pump can lead to drainage issues.
RareHardInstallation Kit
Malfunctioning Timer or Control Board
A faulty control board may not signal the drain pump to activate.
RareHardControl Board

Parts matching

Common parts needed to fix a dishwasher not draining water in the bottom include:

Purchase parts compatible with your dishwasher model using the model number from the user manual or appliance label.

When to call a professional

FAQ

Why is there water in the bottom of my dishwasher after a cycle?

Water pooling is usually due to a clogged filter, drain hose, or a faulty drain pump. Check these components first.

How do I know if the drain pump is bad?

If the pump is clogged, damaged, or makes unusual noises, it may need to be replaced. A multimeter can test for continuity.

Can a clogged garbage disposal cause drainage issues?

Yes, if the dishwasher drains into a disposal, a clog in the disposal can block water from exiting the dishwasher.

How often should I clean the dishwasher filter?

Clean the filter every 1–2 months to prevent clogs and maintain proper drainage.

What should I do if the float switch is stuck?

Try gently moving the float switch manually. If it doesn't move freely, it may need to be replaced.