Dishwasher Error Code E01 (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

Error code E01 on your dishwasher means there's a water supply issue. Check the water inlet valve and ensure the water supply is on. If the valve is faulty, replace it after turning off the power and water supply.

Confirm the symptom

Error code E01 appears on the display
Dishwasher won't fill with water
No water is reaching the dishwasher during the cycle

Tools and prep

Screwdriver set
Multimeter
Adjustable wrench
Replacement water inlet valve (if needed)
Turn off power at the circuit breaker
Shut off the water supply to the dishwasher

Step-by-step troubleshooting

Check Water Supply
Do: Ensure the water supply valve behind the dishwasher is fully open.
Observe: Water should flow freely to the dishwasher.
Means: If water isn't flowing, the valve may be closed or clogged.
Next: If closed, open it. If clogged, clean or replace the valve.
Inspect Water Inlet Valve
Do: Use a multimeter to test the water inlet valve for continuity.
Observe: The multimeter should show a reading between 3,000 and 5,000 ohms.
Means: No reading means the valve is faulty and needs replacement.
Next: Replace the water inlet valve if faulty.
Check for Clogs
Do: Inspect the inlet valve screen and water supply line for debris.
Observe: Debris or sediment may be blocking the flow.
Means: A clogged valve or line prevents water from entering.
Next: Clean the screen and line thoroughly.
Verify Electrical Connections
Do: Check the wiring connections to the water inlet valve.
Observe: Wires should be secure and free of corrosion.
Means: Loose or corroded wires can prevent the valve from working.
Next: Tighten or replace damaged wires.
Test with a New Valve
Do: Install a new water inlet valve if previous steps didn't resolve the issue.
Observe: The dishwasher should now fill with water properly.
Means: A faulty valve is the likely cause of the E01 error.
Next: If the error persists, consult a professional technician.
Restart the Dishwasher
Do: Turn the power and water supply back on.
Observe: The dishwasher should start a normal cycle without the E01 error.
Means: The repair was successful.
Next: Monitor the dishwasher for any recurring issues.

Common causes

Cause	Likelihood	Difficulty	Part often needed
Closed or Clogged Water Supply Valve The valve restricts or blocks water flow to the dishwasher.	Common	Easy	Water supply valve
Faulty Water Inlet Valve The valve fails to open, preventing water from entering.	Common	Easy–Medium	Water inlet valve
Clogged Inlet Valve Screen or Supply Line Debris or sediment blocks water flow.	Sometimes	Easy	Inlet valve screen
Loose or Corroded Wiring Poor electrical connections prevent the valve from activating.	Sometimes	Easy	Electrical wiring kit
Failed Pressure Switch The switch doesn't detect proper water pressure.	Rare	Medium	Pressure switch
Control Board Malfunction The control board fails to send signals to the water inlet valve.	Rare	Hard	Control board

Parts matching

Common parts needed for E01 error repairs:

Water inlet valve
Water supply valve
Inlet valve screen
Electrical wiring kit
Pressure switch

Purchase parts compatible with your dishwasher model for best results.

When to call a professional

The error persists after replacing the water inlet valve
You're unable to locate or access the water inlet valve
You notice water leaks or electrical issues during inspection
The dishwasher still doesn't fill with water after all troubleshooting steps

FAQ

What does error code E01 mean on a dishwasher?

Error code E01 indicates a problem with the water supply, typically related to the water inlet valve or supply line.

Can I fix the E01 error myself?

Yes, you can often fix it by checking the water supply valve, testing the inlet valve, and clearing any clogs. If unsure, consult a professional.

How do I test the water inlet valve?

Use a multimeter to check for continuity. A reading between 3,000 and 5,000 ohms means the valve is working; otherwise, it needs replacement.

Why is my dishwasher showing E01 even after I fixed the valve?

There may be an issue with the pressure switch or control board. These components might need professional diagnosis and repair.

Is it safe to ignore the E01 error?

No, ignoring the error can lead to further damage or inefficient operation. Address the issue promptly.