Dishwasher motor problems

Dishwasher motor problems

The dishwasher motor is a critical component that drives the various cycles of your appliance, ensuring your dishes are cleaned effectively. When a dishwasher motor encounters problems, it can lead to issues such as poor cleaning, unusual noises, or cycles that do not complete properly. In this guide, we’ll explore common reasons for dishwasher motor problems and provide troubleshooting steps to help you diagnose and potentially resolve the issue.

Common Causes of Dishwasher Motor Problems

  1. Blocked Impeller: The dishwasher’s motor often contains an impeller that circulates water. Blockages in the impeller or the pump can hinder the motor’s performance.
  2. Worn Out or Damaged Motor: Over time, the dishwasher motor can wear out or suffer damage due to repeated use, leading to issues with functionality.
  3. Faulty Motor Capacitor: The motor capacitor helps start and run the motor. A malfunctioning capacitor can prevent the motor from operating correctly.
  4. Wiring or Electrical Issues: Problems with the dishwasher’s electrical wiring, connectors, or control board can disrupt the motor’s function.
  5. Stuck Motor Bearings: The motor bearings can become stuck or damaged, causing excessive noise or preventing the motor from running smoothly.

Troubleshooting Steps for Dishwasher Motor Problems

  1. Safety First:
    • Ensure the dishwasher is disconnected from the power source before attempting any troubleshooting or repairs to prevent electrical hazards.
  2. Inspect the Motor and Impeller:
    • Locate the dishwasher’s motor and impeller, which are typically at the bottom of the dishwasher tub. Examine them for visible signs of damage or blockages. If you see any, the motor may need replacement or cleaning.
  3. Check the Motor Capacitor:
    • Use a multimeter to test the motor capacitor for continuity. If the capacitor does not show continuity when tested, it may need replacement.
  4. Inspect Wiring and Electrical Connections:
    • Examine the dishwasher’s wiring, connectors, and control board for loose connections, damaged wires, or signs of burning. Secure or replace any damaged components as needed.
  5. Run a Test Cycle:
    • After performing the above steps, reconnect the dishwasher to the power source and run a test cycle with the dishwasher empty to check if the motor is functioning correctly.
  6. Listen for Unusual Noises:
    • Pay attention to any unusual noises, such as grinding or screeching, during the test cycle. These noises can indicate motor bearing problems.
  7. Monitor for Proper Cleaning:
    • After a cycle, check to see if your dishes are properly cleaned. If the issue persists, it may indicate a more complex problem with the motor.
  8. Consult a Professional:
    • If the dishwasher motor problem persists despite troubleshooting, or if you suspect a more significant issue with internal components, it’s advisable to contact a dishwasher repair technician for a thorough assessment and repair.


Dishwasher repair motor problems can disrupt the appliance’s cleaning cycle and lead to ineffective performance. By following the steps outlined in this guide and ensuring that the motor and impeller are free from blockages, the motor capacitor is functioning correctly, and electrical connections are secure, you can often identify and address the issue. Remember to consult your dishwasher’s user manual for specific guidance and seek professional assistance if the problem persists or if you suspect a more significant issue with the dishwasher’s internal components.



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