Dishwasher Won't Start: Troubleshooting Guide
Quick answer
Check if the dishwasher is receiving power, ensure the door is fully closed and latched, and look for error codes on the control panel. If these don't resolve the issue, reset the dishwasher by unplugging it for a minute.
Confirm the symptom
- Dishwasher does not power on when started
- No water enters the dishwasher during cycle
- Control panel lights are unresponsive
- Dishwasher door is closed but won't begin cycle
- No error codes appear on the display
Tools and prep
- Screwdriver — For accessing internal components
- Multimeter — To check for power supply issues
- Flashlight — To inspect internal components
- Socket wrench — For removing panels if needed
Disclosure: We may earn a commission from qualifying purchases via affiliate links. Learn more.
Prep & safety
- Ensure the dishwasher is turned off and unplugged before inspecting internal components.
- Wear protective gloves to avoid electrical shocks.
Step-by-step troubleshooting
Check Power Supply
Do: Verify the dishwasher is plugged in and the circuit breaker hasn't tripped.
Observe: Power indicator light or control panel response.
Means: If no power, check the outlet and circuit breaker.
Next: If power is confirmed, proceed to next step.
Inspect Door Latch
Do: Ensure the door is fully closed and the latch engages properly.
Observe: Door closure and latch mechanism movement.
Means: A faulty latch prevents the dishwasher from starting.
Next: If latch is faulty, proceed to next step.
Look for Error Codes
Do: Check the control panel for any displayed error codes.
Observe: Error code numbers or symbols.
Means: Error codes indicate specific issues like water supply or heating problems.
Next: Refer to the user manual for code meanings.
Reset the Dishwasher
Do: Unplug the dishwasher for one minute, then plug it back in.
Observe: Dishwasher powers on and responds to controls.
Means: A reset can resolve temporary electrical glitches.
Next: If issue persists, proceed to next step.
Check Water Supply
Do: Ensure the water inlet valve is open and the supply line is not kinked.
Observe: Water flow from the supply line and into the dishwasher.
Means: No water supply prevents the dishwasher from starting.
Next: If water supply is blocked, contact a professional.
Test Control Panel
Do: Press and hold the start button for 5 seconds to test the control panel.
Observe: Control panel lights up or responds.
Means: A non-responsive control panel may need replacement.
Next: If control panel is faulty, contact a professional.
Common causes table
| Cause | Why | Likelihood | Difficulty | Part often needed |
|---|---|---|---|---|
| Power outage or tripped circuit breaker | No power to the dishwasher prevents operation. | High | Low | None |
| Faulty door latch | The door must be fully closed for the dishwasher to start. | Medium | Medium | Door latch assembly |
| Error code indicating internal issue | Error codes signal specific problems like water supply or heating. | Medium | High | Control board |
| Water supply issue | No water prevents the dishwasher from starting. | Medium | Low | Water inlet valve |
| Faulty control panel | A non-responsive control panel prevents operation. | Low | High | Control panel |
| Blocked drain or filter | A clogged filter or drain can prevent the dishwasher from starting. | Low | Medium | Filter or drain hose |
Parts matching
When replacing parts, ensure compatibility with your dishwasher model.
- Door latch assembly: model number and compatibility with your dishwasher
- Control board: model-specific and compatible with your dishwasher's make and model
- Water inlet valve: compatible with your dishwasher's water supply type
- Filter: model-specific and compatible with your dishwasher's filtration system
Always refer to your dishwasher's user manual for part specifications.
Disclosure: We may earn a commission from qualifying purchases via affiliate links. Learn more.
When to call a pro
- If the dishwasher still won't start after checking all power and water connections
- If error codes persist after a reset
- If internal components like the control board or motor are suspected to be faulty
- If you're unsure about handling electrical components
- If the dishwasher is under warranty and you don't want to risk voiding it
FAQ
Why is my dishwasher not getting power?
Check the circuit breaker and ensure the dishwasher is properly plugged in. A tripped breaker or loose connection can cut power.
How do I reset my dishwasher?
Unplug the dishwasher for one minute, then plug it back in. This can clear temporary electrical issues.
What does an error code on my dishwasher mean?
Error codes indicate specific problems like water supply issues or heating element failure. Refer to the user manual for code meanings.
Can a faulty door latch prevent the dishwasher from starting?
Yes, a faulty or misaligned door latch can prevent the dishwasher from starting. Ensure the latch engages properly or replace it if necessary.