Why Your Dishwasher Is Not Draining: Common Causes and Repair Solutions in Scarborough

A dishwasher that won’t drain properly is one of the most common appliance issues in Scarborough homes. Standing water at the bottom of the dishwasher not only affects cleaning performance but can also lead to unpleasant odors and potential water damage if ignored.

Below, we explain the most common reasons a dishwasher is not draining and what you can do before calling a professional repair service.

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Why Dishwasher Drainage Problems Should Be Fixed Quickly

When water remains inside the dishwasher after a cycle, it usually indicates a blockage or mechanical failure. Continuing to run the appliance in this condition can damage internal components, cause leaks, and shorten the lifespan of the unit.

Early diagnosis helps avoid costly repairs and keeps your dishwasher working efficiently.

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Common Reasons Your Dishwasher Is Not Draining

Clogged Dishwasher Filter

Food particles, grease, and debris can block the dishwasher filter over time, preventing proper drainage.

What to do:
Remove the filter located at the bottom of the dishwasher and rinse it thoroughly under warm water. Regular filter cleaning helps prevent future drainage issues.

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Blocked Drain Hose

The drain hose carries wastewater out of the dishwasher. If it becomes kinked or clogged, water cannot exit the unit.

What to do:
Check the hose behind the dishwasher for bends or obstructions. If the hose is clogged internally, professional cleaning or replacement may be required.

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Faulty Drain Pump

If the pump is damaged or worn out, it may not be able to push water out of the dishwasher.

Signs of a drain pump issue:
• Humming sounds during draining
• Standing water even after cleaning filters

Drain pump problems usually require professional dishwasher repair.

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Garbage Disposal Connection Issue

In many Scarborough homes, the dishwasher drains through the garbage disposal. If the disposal’s knockout plug was not removed during installation, drainage will be blocked.

What to do:
If the dishwasher was recently installed, have a technician check the disposal connection.

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Control Board or Sensor Problems

Modern dishwashers rely on sensors and electronic control boards to manage draining cycles. A malfunction can stop the dishwasher from draining even when no blockage is present.

What to do:
Electronic issues should always be handled by a trained appliance repair technician.

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When to Call for Dishwasher Repair in Scarborough

You should contact a professional if:
• Water remains in the dishwasher after every cycle
• You notice leaks around the unit
• Error codes related to draining appear
• The dishwasher makes unusual noises

Ignoring drainage issues can result in pump failure or water damage.

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Professional Dishwasher Repair Services in Scarborough

If your dishwasher is not draining properly, expert diagnosis can save time and prevent further damage. Our technicians provide reliable dishwasher repair services in Scarborough, working with all major brands including Bosch, Samsung, LG, Whirlpool, GE, and Frigidaire.

Contact us today to schedule dishwasher repair in Scarborough and restore your appliance to proper working condition.