Why Is My Dishwasher Not Draining? 6 Common Causes

If your dishwasher finishes a cycle but leaves standing water at the bottom, it can be frustrating and inconvenient. A dishwasher that won’t drain properly often means something is blocking the drainage system or a component inside the appliance is not working correctly.

Several issues can cause a dishwasher to stop draining. Some problems are simple to fix, while others may require professional repair.

In this guide, we’ll explain the most common reasons a dishwasher will not drain and when it may be time to call a technician.

1. Clogged Dishwasher Filter

Many dishwashers have a filter at the bottom of the tub that catches food particles and debris.

If the filter becomes clogged, water may not drain properly from the dishwasher.

Cleaning the filter regularly can help prevent drainage problems.

2. Blocked Drain Hose

The drain hose carries water from the dishwasher to the kitchen drain.

If the hose becomes blocked by food debris or grease buildup, water may remain in the dishwasher after the cycle finishes.

Checking for kinks or blockages in the hose may help solve the issue.

3. Faulty Drain Pump

The drain pump is responsible for pushing water out of the dishwasher during the drain cycle.

If the pump becomes damaged or clogged, it may not be able to remove the water properly.

A technician may need to repair or replace the pump.

4. Garbage Disposal Blockage

In many homes, the dishwasher drains into the garbage disposal.

If the disposal is clogged or the dishwasher drain plug was never removed during installation, the dishwasher may not drain correctly.

Running the garbage disposal can sometimes fix this issue.

5. Air Gap Blockage

Some dishwashers include an air gap device near the sink that prevents backflow from the drain.

If the air gap becomes clogged with debris, water may not drain properly from the dishwasher.

Cleaning the air gap may restore normal drainage.

6. Control Board Problems

Modern dishwashers rely on electronic control boards to manage different cycles.

If the control board fails, the dishwasher may stop draining or fail to complete the cycle properly.

This type of issue usually requires professional repair.

When to Call for Dishwasher Repair

If your dishwasher still contains standing water after a cycle or fails to drain completely, it may be time to schedule professional repair.

A technician can quickly diagnose whether the issue involves the pump, drainage system, or electrical components.

Addressing the problem early can help prevent further damage to the appliance.

Dishwasher Repair in Tallahassee, FL

Capital Appliance Repair provides professional dishwasher repair services in Tallahassee, Crawfordville, and surrounding communities throughout Leon and Wakulla County.

Our technicians diagnose drainage problems quickly and provide reliable repairs to restore your dishwasher.

Need Dishwasher Repair in Tallahassee?

If your dishwasher will not drain properly, our technicians are ready to help.

Call today to schedule fast and reliable dishwasher repair in Tallahassee, FL.