Kitchenaid Dishwasher: not draining

Professional Repair Guide

What is this symptom?

If your KitchenAid dishwasher is not draining, you're likely facing standing water at the bottom after a cycle. This issue can result from a clogged drain hose, an obstruction in the filter, or even a drain pump failure. Understanding the cause is essential to restore your dishwasher's proper function.

Urgency: Medium

Important Tips for Kitchenaid Models

  • Newly installed units can fail to drain due to misrouted or kinked drain hose, missing disposal knockout plug, or air gap issues.

Possible Causes

Clogged drain hose

How to Identify: Standing water despite cycle completion and visual inspection shows kinks, debris, or blockages in hose; water may slowly drain or not at all.

Part: Drain hose

Obstruction in dishwasher filter or drain area

How to Identify: Visible food particles, debris, or residue at the filter or drain opening blocking water flow.

Part: Filter/drain basket

Clogged air gap or garbage disposal connection

How to Identify: Dishwasher is connected to kitchen disposal; water backs up when disposal is clogged or air gap is blocked. Inspection shows obstruction at air gap or disposal inlet.

Part: Air gap / disposal connection

Drain pump failure

How to Identify: No humming or spinning sound during drain cycle, or pump runs but water does not drain; multimeter testing shows no power output.

Part: Drain pump

Faulty control board

How to Identify: Drain pump doesn’t activate despite clear hoses/filters, and electrical testing indicates control board failure sending no signal.

Part: Control board

DIY Solutions

Check and straighten drain hose

Moderate 15-30 minutes
Tools Needed: screwdriver, flashlight
  1. Turn off power to dishwasher and open cabinet under sink.
  2. Locate the drain hose from dishwasher to disposal/drain line.
  3. Visually inspect for kinks or twists; straighten hose as needed.
  4. Disconnect hose at both ends if necessary and check for debris; remove blockages with a flexible brush or wire.
  5. Reconnect hose securely and run a short drain cycle to test.
⚠️ Safety First: Ensure power is off before working under sink to avoid electrical hazards.

Clean dishwasher filter and drain area

Easy 10-20 minutes
Tools Needed: gloves, soft brush
  1. Open dishwasher and remove bottom rack.
  2. Locate filter and drain grate at bottom of tub.
  3. Remove any food debris or buildup; rinse filter under running water.
  4. Use soft brush to clean drain opening area.
  5. Replace filter and run a rinse cycle to verify improved drainage.
⚠️ Safety First: Do not force filter parts; note orientation for correct reassembly.

Clear air gap and garbage disposal connection

Moderate 15-30 minutes
Tools Needed: screwdriver, pliers
  1. Locate air gap on sink or disposal connection.
  2. Remove air gap cover and inspect for debris; clean by flushing with water.
  3. Check disposal inlet for lodged food; remove obstructions with tongs safely.
  4. Run disposal briefly to clear any clogs, then run dishwasher drain cycle.
⚠️ Safety First: Turn off disposal power before reaching inside disposal.

Professional Repairs

Drain pump replacement

Estimated Cost: $80 - $180

Control board replacement

Estimated Cost: $150 - $350

When to Call a Professional

If internal components like pump or control board are suspected faulty after basic checks.
If you are uncomfortable working with electrical and plumbing connections.
If blockages persist after DIY efforts.

Preventive Maintenance

  • Clean filters: Debris buildup that leads to clogs and drainage issues
    Frequency: monthly
  • Inspect drain hose routing: Kinks or improper loops that impede drainage
    Frequency: annually

Frequently Asked Questions

Why is my KitchenAid Dishwasher not draining?
Common causes include clogged drain hoses, obstructions in the filter, or drain pump failure.
How do I fix KitchenAid Dishwasher not draining myself?
Check the drain hose for kinks, clean the filter and drain area, or clear any blockages in the air gap.
How much does it cost to fix not draining?
Professional repair costs range from $80 to $350, depending on whether you need a pump or control board replacement.
When should I call a technician for not draining?
If DIY solutions don't work or you suspect a pump failure, it's time to consult a technician.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

75%
DIY Success Rate Difficulty: Either

Common Issues Reported by Users

  • Drain pump failure (3 mentions)
  • Drain hose issues (2 mentions)

User Suggested Solutions

  1. Replace drain pump

    Success rate: 22.0%

  2. Raise bend in drain hose

    Success rate: 11.0%

  3. Replace wiring harness and reset breaker

    Success rate: 11.0%

  4. Replace fill valve

    Success rate: 11.0%
Analysis based on 8 community discussions
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. KitchenAid Superba Dishwasher- We JUST replaced a bad fuse, ...
  2. KitchenAid Dishwasher Intermittently Not Draining -- Advice?
  3. F1E9 code Kitchenaid Dishwasher multiple failed repairs
  4. Kitchenaid Dishwasher fails to drain sporadically?
  5. Repair or replace KitchenAid dishwasher
  6. Standing water post, truly at a loss
  7. Kitchenaid dishwasher, fills on its own after cycle, repair ...
  8. Repair or replace 6 1/2 year old Kitchenaid KDTE104 dishwash...

Community Discussions

fills on its own after cycle

replaced fill valve

DIY View on Reddit →

not draining properly, standing water after cycle

The issue was resolved by raising the bend in the dishwasher drain hose.

Pro needed View on Reddit →

Cycle interrupted, water remaining in bottom, flashing child lock light, no response when pressing buttons

Replaced wiring harness to the fuse and reset the breaker; dishwasher is functioning again.

DIY View on Reddit →

the drain motor has apparently gone bad; the dishwasher starts normally but stops before it is done and won’t drain out any water

Replace the drain pump motor for $270 or consider replacing the dishwasher for $800.

Pro needed View on Reddit →

not draining

Replacing the drain pump is a viable solution and can be done relatively easily.

DIY View on Reddit →

Source: Reddit r/appliancerepair

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