Dishwasher Not Working Troubleshooting (Troubleshooting Guide)

On this page

Quick answer
Confirm the symptom
Tools and prep
Step-by-step troubleshooting
Common causes table
Parts matching
When to call a pro
FAQ
Related guides

Quick answer

First, check if the dishwasher is receiving power and water. Look for error codes on the display. If the door is closed properly and the start button is pressed, the issue may be with the control board or a faulty component.

Confirm the symptom

Dishwasher won't start at all
No water entering the dishwasher
Dishwasher starts but stops immediately
Error code displayed on the panel
Dishes not cleaning properly

Tools and prep

Screwdriver set
Multimeter (for testing electrical components)
Flashlight
Plumber's wrench (if checking water supply)
Rubber gloves
Turn off power at the circuit breaker before troubleshooting
Shut off water supply if working near connections

Step-by-step troubleshooting

Check Power Supply
Do: Verify the dishwasher is plugged in and the circuit breaker hasn't tripped.
Observe: Power indicator lights or motor humming when door is closed.
Means: Power supply is functional.
Next: If no power, check outlet or breaker.
Inspect Water Supply
Do: Ensure the water valve is fully open and check for kinks in the supply hose.
Observe: Water flows freely from the inlet valve when turned on.
Means: Water supply is adequate.
Next: If no water, check valve or hose.
Check Door Latch and Seal
Do: Close the door firmly and ensure the latch engages properly.
Observe: Door locks securely and the control panel lights up.
Means: Door mechanism is working.
Next: If door doesn't latch, inspect the latch assembly.
Look for Error Codes
Do: Check the control panel for any error codes or blinking lights.
Observe: Specific error code is displayed (e.g., F1, LE, etc.).
Means: The dishwasher has a specific fault.
Next: Refer to the user manual for code meaning.
Test the Start Button
Do: Press and hold the start button for 5 seconds to reset the system.
Observe: Dishwasher starts cycling or displays a new message.
Means: The control board may be responsive.
Next: If no change, test for a faulty control board.
Inspect the Drain Hose
Do: Check the drain hose for clogs or kinks near the sink or garbage disposal.
Observe: Water drains freely without obstruction.
Means: Drain system is clear.
Next: If clogged, clear the blockage or replace the hose.

Common causes

Cause	Likelihood	Difficulty	Part often needed
No Power Tripped circuit breaker or faulty outlet.	Common	Easy	None
Water Supply Issue Closed valve, kinked hose, or clogged filter.	Common	Easy	Water inlet valve
Faulty Door Latch Door not closing properly prevents the dishwasher from starting.	Sometimes	Easy–Medium	Door latch assembly
Clogged Drain Hose Food debris or soap scum blocks water flow.	Sometimes	Easy	Drain hose
Error Code Fault Control board detects a specific issue (e.g., heating element failure).	Sometimes	Medium	Control board
Faulty Control Board Malfunctioning electronics prevent proper operation.	Rare	Hard	Control board

Parts matching

Common parts needed for a dishwasher not working include:

Water inlet valve (for water supply issues)
Door latch assembly (for door closure problems)
Drain hose (for clogged drainage)
Control board (for error code faults)

Purchase OEM parts for compatibility and reliability.

When to call a professional

The dishwasher shows an error code you can't resolve with troubleshooting
You suspect electrical issues beyond basic checks
You're unsure about safely handling components like the control board
The appliance is under warranty and you don't want to void it
After replacing parts, the dishwasher still doesn't work

FAQ

Why won't my dishwasher start even though it's plugged in?

Check the circuit breaker to ensure it hasn't tripped. Also, verify the door is closed properly and the start button is functioning.

What should I do if my dishwasher has an error code?

Refer to the user manual for the specific error code meaning. Some codes indicate simple fixes like clearing a clog, while others may require part replacement.

Can a clogged drain hose cause the dishwasher to stop working?

Yes, a clogged drain hose can prevent water from draining, causing the dishwasher to stop mid-cycle or fail to start.

How do I know if the door latch is faulty?

If the dishwasher won't start and the door appears closed but the latch isn't engaging, the latch assembly may be faulty and need replacement.