Quick answer
If your dishwasher isn't working, first check the power and door latch. Ensure the unit is receiving electricity and the door is properly closed. If the issue persists, run a diagnostic cycle or check for error codes.
Confirm the symptom
- Dishwasher won't start or turn on
- No water entering the dishwasher
- No sound or power when pressing buttons
- Dishwasher door won't close properly
Tools and prep
- Screwdriver set
- Multimeter
- Flashlight
- Plastic putty knife
- Rubber gloves
- Turn off power at the circuit breaker
- Shut off water supply if needed
Step-by-step troubleshooting
- Check Power Supply
Do: Verify the dishwasher is plugged in and the circuit breaker hasn't tripped.Observe: Power is restored and the control panel lights up.Means: Power issue resolved.Next: If power is normal, move to the next step.
- Inspect Door Latch
Do: Close the door and ensure the latch engages securely.Observe: Door closes fully and the dishwasher starts.Means: Door latch was the issue.Next: If the door is closed properly, continue troubleshooting.
- Check for Error Codes
Do: Look at the control panel for any error codes or blinking lights.Observe: Error code or light is displayed.Means: Specific issue identified.Next: Refer to the user manual for error code meaning and resolution.
- Run Diagnostic Cycle
Do: Consult the user manual to initiate a diagnostic cycle if available.Observe: Dishwasher runs a test cycle and displays results.Means: Issue may be identified automatically.Next: Follow manual instructions for the diagnostic results.
- Check Water Inlet Valve
Do: Listen for a humming sound when starting the dishwasher. Check the water supply valve under the sink.Observe: No sound indicates a possible valve issue; water supply is on.Means: Water inlet valve may be faulty.Next: Test the water inlet valve with a multimeter.
- Test Water Inlet Valve
Do: Use a multimeter to check for continuity in the water inlet valve.Observe: No continuity indicates a faulty valve.Means: Water inlet valve needs replacement.Next: Replace the water inlet valve if faulty.
- Inspect Motor and Pump
Do: Listen for any unusual noises or lack of motor sound during operation.Observe: No motor sound or strange noises detected.Means: Motor or pump may be damaged.Next: Further inspection or professional help may be needed.
Common causes
| Cause | Likelihood | Difficulty | Part often needed |
|---|---|---|---|
| Power Supply Issue The dishwasher isn't receiving electricity due to a tripped breaker or faulty outlet. | Common | Easy | None |
| Faulty Door Latch The door isn't latching properly, preventing the dishwasher from starting. | Common | Easy | Door latch assembly |
| Water Inlet Valve Failure The valve isn't allowing water into the dishwasher, causing it to not operate correctly. | Sometimes | Easy–Medium | Water inlet valve |
| Control Board Malfunction The control board isn't sending signals to start the dishwasher. | Sometimes | Hard | Control board |
| Faulty Motor or Pump The motor or pump isn't working, preventing the dishwasher from running. | Rare | Hard | Motor or pump assembly |
| User Error or Settings Incorrect settings or a paused cycle are preventing operation. | Common | Easy | None |
Parts matching
Common parts needed for a dishwasher not working include:
- Door latch assembly
- Water inlet valve
- Control board
- Motor or pump assembly
Always match the part to your dishwasher model using the serial number and user manual for compatibility.
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When to call a professional
- If the dishwasher still doesn't work after replacing common parts
- If you're unsure about electrical or complex repairs
- If the unit is under warranty and DIY repairs may void it
- If there's a gas leak or electrical fire hazard
FAQ
Why won't my dishwasher start?
Ensure the power is on, the door is closed properly, and there are no error codes. Check the circuit breaker and water supply valve.
How do I reset my dishwasher?
Unplug the dishwasher for 1–2 minutes or turn off the circuit breaker for 30 seconds, then restore power.
Can a tripped circuit breaker cause a dishwasher not to work?
Yes, a tripped breaker is a common cause. Check the electrical panel and reset if necessary.
What if my dishwasher has no water?
Check the water supply valve under the sink, test the water inlet valve, and ensure there's no clog in the inlet hose.