To test a dishwasher motor, first disconnect the power. Remove the lower access panel and disconnect the motor's wire harness. Use a multimeter set to the Ohms (resistance) setting and touch the probes to the motor terminals. A reading of 10 10 to 100 100 Ohms means the motor is likely functional.
Disconnect the motor's two wire leads from the wiring harness. Set your multimeter to the R x 1 setting. Touch each of the meter's probes to one terminal each. Your motor should show little resistance (a reading of zero, or close to zero).
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.
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.
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.
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.
Replacing a dishwasher motor and pump assembly typically costs between $𝟑𝟓𝟎 and $𝟔𝟓𝟎 in total. This includes $𝟏𝟑𝟎 to $𝟑𝟎𝟎 for the part alone (since the motor and pump are usually sold as a single unit) and $𝟏𝟓𝟎 to $𝟐𝟓𝟎 for professional labor.
Most dishwashers do not have a dedicated "Reset" button. Instead, you can usually reset the machine by pressing and holding the Start or Cancel button for 3 to 5 seconds. Alternatively, you can reset it by cutting the power entirely (unplugging it or flipping the circuit breaker for one minute).
The average dishwasher lasts 9 to 12 years. With meticulous maintenance and light usage, some high-end or European models (like Bosch) can stretch up to 15 years, while cheaper models or those run daily may wear out in 7 to 9 years.
If your dishwasher is not working, you may want to consider these potential causes:
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.
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.
A bad dishwasher pump usually shows a few clear warning signs: standing water at the end of a cycle, strange noises (like humming or high-pitched whining), or dishes that remain dirty because water isn't circulating. To confirm, check for blockages, ensure the impeller spins freely, and test the pump with a multimeter for continuity.
Dishwasher troubleshooting starts with checking the most common and easily fixable culprits: power supply, blocked filters, and spray arms. To quickly pinpoint your issue, run through this checklist before calling a repair technician.
Expert Picks: The Most Reliable Dishwasher Models. The average cost to replace a dishwasher will depend on the model you choose. You can expect to pay between $300 and $1500 for a new appliance.
Your dishwasher is likely failing if you notice pooled water at the end of a cycle, persistent burning smells, or dishes consistently coming out dirty or cold. These issues often point to failing motors, faulty heating elements, or blocked pumps.
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.
Dishwashers usually don't have a dedicated reset button on the control panel. You can reset your dishwasher by unplugging it from its power source for one minute and then plugging it back in.
Water Not Draining After A Cycle
If you open the door and find standing water, the drainage system may be blocked or misaligned. This is one of the simplest problems to fix at home.
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.
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.