Dishwasher Error Code E15: Fix It Yourself (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 E15 on your dishwasher usually means a water supply issue. Check the water inlet valve and ensure the water supply is on and unobstructed. If the problem persists, test the valve for faults.

Confirm the symptom

Error code E15 is displayed on the dishwasher control panel
Dishwasher fails to fill with water during the cycle
Water supply seems normal but the dishwasher still shows E15

Tools and prep

Screwdriver set
Multimeter
Adjustable wrench
Towel or rag
Turn off the power to the dishwasher at the circuit breaker
Shut off the water supply to the dishwasher

Step-by-step troubleshooting

Check Water Supply Valve
Do: Locate the water supply valve under the sink or near the dishwasher and ensure it is fully open.
Observe: Valve is open and water flows freely.
Means: Water supply is not the issue; move to the next step.
Next: Test Water Inlet Valve
Test Water Inlet Valve
Do: Use a multimeter to test the water inlet valve for continuity. Disconnect the power first.
Observe: Multimeter shows no continuity or erratic readings.
Means: The water inlet valve is faulty and may need replacement.
Next: Replace Water Inlet Valve
Inspect Water Inlet Hose
Do: Check the hose for kinks, cracks, or blockages. Disconnect the hose from the dishwasher and run water through it.
Observe: Water flows freely without obstruction.
Means: Hose is not the issue; continue troubleshooting.
Next: Check Dishwasher Filter
Check Dishwasher Filter
Do: Remove and clean the dishwasher filter to ensure it is not clogged with debris.
Observe: Filter is clean and free of blockages.
Means: Filter is not the cause; proceed to the next step.
Next: Inspect Pressure Switch
Inspect Pressure Switch
Do: Locate the pressure switch and check for any visible damage or blockage. Test it with a multimeter for continuity.
Observe: Switch shows no continuity or is damaged.
Means: The pressure switch may be faulty and needs replacement.
Next: Call a Professional
Call a Professional
Do: If all previous steps fail to resolve the issue, contact a qualified technician.
Observe: Professional diagnosis and repair are needed.
Means: The issue is likely complex and requires expert intervention.
Next: End

Common causes

Cause	Likelihood	Difficulty	Part often needed
Faulty Water Inlet Valve The valve may be clogged or electrically faulty, preventing water from entering the dishwasher.	Common	Medium	Water Inlet Valve
Clogged or Kinked Inlet Hose A blocked or kinked hose restricts water flow to the dishwasher.	Common	Easy	Water Inlet Hose
Low Water Pressure Insufficient water pressure can prevent the dishwasher from filling properly.	Sometimes	Easy	None
Clogged Dishwasher Filter A dirty filter can restrict water flow and trigger error code E15.	Sometimes	Easy	Dishwasher Filter
Faulty Pressure Switch The pressure switch may be malfunctioning, failing to detect proper water levels.	Rare	Hard	Pressure Switch
Blocked Water Supply Line Mineral buildup or debris in the water line can prevent water from reaching the dishwasher.	Sometimes	Medium	Water Inlet Hose or Water Supply Line

Parts matching

Common parts that may be needed to fix error code E15 include:

Water Inlet Valve
Water Inlet Hose
Dishwasher Filter
Pressure Switch

Always purchase replacement parts compatible with your dishwasher model.

When to call a professional

If the error persists after replacing the water inlet valve and hose
If you are unable to locate or test the pressure switch
If you are not comfortable working with electrical components
If the dishwasher still does not fill with water after all troubleshooting steps

FAQ

What does error code E15 mean on my dishwasher?

Error code E15 typically indicates a problem with the water supply, such as a faulty inlet valve, low water pressure, or a clogged hose or filter.

Can I fix error code E15 myself?

Yes, many common causes like a faulty water inlet valve or clogged hose can be addressed with basic tools and troubleshooting.

How do I test the water inlet valve?

Use a multimeter to check for continuity. If there is no continuity, the valve is likely faulty and needs replacement.

Why is my dishwasher showing E15 even though the water supply is on?

Even with the water supply on, a clogged hose, low water pressure, or a faulty inlet valve can still trigger the E15 error.

Do I need to replace the entire dishwasher if E15 won't go away?

No, replacing specific parts like the water inlet valve or hose is usually sufficient. Only consider replacing the entire unit if multiple components are faulty or the dishwasher is very old.