In this guide, we’ll go over common dishwasher problems, how to troubleshoot them, and when it’s best to leave the job to a pro.
Common Dishwasher Problems and DIY Fixes
1. Dishwasher Won’t Start
Possible Causes:
• Power issue
• Door latch malfunction
• Faulty control panel
DIY Fix:
✅ Check if the dishwasher is plugged in and the circuit breaker isn’t tripped.
✅ Make sure the door is closing properly—sometimes, a misaligned latch can prevent it from starting.
✅ If the control panel is unresponsive, try resetting the dishwasher by unplugging it for a few minutes.
When to Call a Pro:
If the dishwasher still doesn’t turn on, the issue could be a faulty control board, wiring problem, or motor failure, which require professional diagnosis.
2. Dishwasher Not Draining Properly
Possible Causes:
• Clogged drain filter or hose
• Garbage disposal blockage
• Faulty drain pump
DIY Fix:
✅ Remove and clean the dishwasher filter—food debris can cause blockages.
✅ Check the drain hose for kinks or clogs.
✅ If your dishwasher drains through a garbage disposal, run it to clear any obstructions.
When to Call a Pro:
If the dishwasher still won’t drain after cleaning the filter and hose, the drain pump may be faulty and need replacement.
3. Dishes Come Out Dirty
Possible Causes:
• Clogged spray arms
• Low water temperature
• Incorrect detergent usage
DIY Fix:
✅ Remove and clean the spray arms to unclog food particles.
✅ Run hot water in your sink before starting the dishwasher to ensure the water is warm enough.
✅ Use high-quality detergent and avoid overloading the dishwasher.
When to Call a Pro:
If dishes are still coming out dirty after cleaning and adjusting your detergent, there may be an issue with the water inlet valve or circulation pump.
4. Dishwasher is Leaking Water
Possible Causes:
• Loose or damaged door gasket
• Faulty float switch
• Overloading with too much detergent
DIY Fix:
✅ Inspect the door gasket for cracks and replace if necessary.
✅ Check the float switch (usually located at the bottom of the dishwasher) to ensure it’s moving freely.
✅ Use the right type and amount of detergent—too much soap can cause excess suds and leaks.
When to Call a Pro:
If leaks persist, there could be a problem with the inlet valve, drain pump, or door alignment, which requires expert repair.
5. Dishwasher Makes Strange Noises
Possible Causes:
• Blocked spray arms
• Loose or worn-out pump motor
• Foreign objects stuck in the drain pump
DIY Fix:
✅ Make sure the spray arms are spinning freely and not hitting any dishes.
✅ Inspect the bottom of the dishwasher for loose debris like broken glass or food particles.
When to Call a Pro:
If the noise sounds like grinding or humming and doesn’t go away, the motor or pump may be failing and need professional repair.
When It’s Best to Call a Professional
While many dishwasher issues can be fixed with basic troubleshooting, these situations require a professional technician:
• Electrical Issues – If the dishwasher keeps tripping the circuit breaker, there may be a wiring problem.
• Water Damage or Flooding – A major leak can cause water damage to your kitchen floor and cabinets.
• Persistent Error Codes – If your dishwasher displays an error code that won’t clear, the problem may be with the control board.
• Major Component Replacements – If the motor, heating element, or control panel fails, a professional repair is often the safest option.
• The Dishwasher is Old – If your dishwasher is over 10 years old and keeps breaking down, replacing it may be more cost-effective than repairing it.
Final Thoughts
DIY dishwasher repairs can save you time and money, but knowing when to call a professional is just as important. Start with simple fixes like cleaning the filter, unclogging spray arms, and checking the power source. If the problem persists or involves electrical components, it’s best to seek expert help.
Have you ever fixed a dishwasher yourself? Share your experience in the comments below!