A failing or broken dishwasher motor generally produces a loud, continuous hum or buzz, a squealing or high-pitched whine, or a harsh grinding noise. The exact sound often indicates which component is at fault:
To determine if your dishwasher motor is bad, listen for a humming or silent motor, check for poor cleaning/draining, or smell for burning odors. Use a multimeter to test for electrical continuity and verify the motor is getting power.
You can often fix these types of problems on your own. But significant problems, such as motor or pump failures, might mean the cost of repairs exceeds the value of the dishwasher. Lean toward replacing the dishwasher if it's older than 7 years and is facing a major repair.
Strange Noises During Operation
A dishwasher should operate relatively quietly. If you hear unusual grinding, squealing, or rattling sounds, it may point to: Worn-out bearings. Broken motor parts.
The average lifespan of a dishwasher is 9 to 12 years. However, premium brands properly maintained can last up to 15 years, while heavy use or hard water can cause models to break down in 7 to 8 years.
The most common dishwasher fault is clogged or poor drainage. This occurs when food debris, grease, or foreign objects (like broken glass or food particles) block the primary drain filter, the drain hose, or the garbage disposal connection, leaving dirty, standing water at the bottom of the unit.
The control board or electronic control unit is typically the most expensive part in a dishwasher. It manages all the dishwasher's functions, such as the wash cycles, water temperature, and the timing of the washing and drying processes.
Is it cheaper to repair or replace a dishwasher? If the cost to repair exceeds 50% of the cost of a new one or your unit is over 8–10 years old, replacement is usually the smarter option.
Replacing a motor is a complex job and requires disassembly and electrical expertise, so hiring a professional is best. To replace dishwasher pump motor parts can cost between $400-$600, with labor adding $150–$250. The repair can take 2–4 hours depending on the dishwasher model and accessibility.
People put crumpled aluminum foil in the dishwasher primarily as a hack to make silver or stainless steel utensils and cutlery look shinier.
When the dishwasher fills with water but then nothing happens, and there's no humming or movement, it's highly likely that the motor has completely stopped functioning. This could be due to: Burnt-out motor windings. Faulty control board not signaling the motor.
Plumbers can fix dishwashers in all states of disrepair, whether they're not draining or making sounds during a wash cycle. In particular, you'll want to call a plumber if: Water continues pooling at the bottom despite troubleshooting. The drain pump or motor is malfunctioning.
This happens because the motor overheats from strain. Many dishwashers include safety features that shut the motor down to prevent damage, which leads to irregular washing. We can watch for these interruptions by noting whether the machine seems to take longer than usual or leaves cycles incomplete.
Some models require you to shut off the power to the dishwasher either by unplugging it or shutting off the circuit breaker. Others are reset by pressing and holding the Start/Reset button on the control panel, then waiting a few moments before attempting to start a wash cycle.
Pump failure symptoms depend on the specific type of pump (like water vs. fuel). Common signs across most automotive pumps include engine overheating, sputtering or power loss, fluid leaks, loud whining or grinding noises, and a check engine light or total failure to start.
For basic dishwasher repairs such as unclogging the dishwasher, fixing a door latch, or replacing a gasket, costs can start from around $100 to $200. If the repair involves replacing components like the motor, pump, or heating element, the costs might range between $200 to $400.
To determine if your dishwasher motor is bad, listen for a humming or silent motor, check for poor cleaning/draining, or smell for burning odors. Use a multimeter to test for electrical continuity and verify the motor is getting power.
Repair Is Almost Always Cheaper Than Replacement
Most dishwasher repairs cost far less than a brand-new appliance, which can run anywhere from $500 to $1,500. Minor repairs—like unclogging drain lines, fixing float switches, or replacing door seals—can usually be handled the same day for a fraction of that price.
The most common dishwasher problems usually stem from user habits, maintenance, and natural wear and tear. Leading issues include standing water, poor cleaning performance, foul odors, and leaks. Often, these can be quickly resolved with basic troubleshooting and routine cleaning.
On the other hand, you can get an idea of how long a new dishwasher will last by checking its manual. Bosch, KitchenAid, Whirlpool, and Samsung can last up to ten years. Frigidaire, Kenmore, and Electrolux can operate for more than ten years. Miele can work for up to 20 years.
What is the 50/50 rule for appliances? It's a simple way to decide whether to repair or replace a home appliance like a refrigerator or dishwasher. If the appliance has reached 50% of its lifespan, and the cost to repair is 50% more than a replacement, then it may be time to replace it.
7 Most Recommended Dishwashers
Note: For fire safety reasons, only run appliances like dishwashers while you're home, and try to avoid running them when you're sleeping. If you're not a night owl, consider running the machine early in the morning before you go to work to still snag the cost savings.
Here are the most commonly replaced dishwasher repair parts: