Bosch Dishwasher Error Code E04: How to Fix It
Medium 30-60 minutes Medium Severity
Verified June 2026
- Error Code
- E04
- Brand
- Bosch
- Product Type
- dishwasher
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 30-60 minutes
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Tools You'll Need
- Multimeter
- Soft brush
- Towel or bucket
- Screwdriver set (flathead and Phillips)
- Flashlight
How to Fix Error Code E04
-
Unplug the Dishwasher
Always unplug the appliance before performing any maintenance. -
Turn Off the Water Supply
-
Check for Kinked or Blocked Water Inlet Hose
Place a towel or bucket under the hose to catch any water. -
Inspect the Flow Meter Assembly
-
Test the Flow Meter with a Multimeter
Ensure the dishwasher is unplugged before testing electrical components. -
Check the Water Inlet Valve
-
Reset the Dishwasher
-
Replace the Control Board (If Necessary)
Only attempt this if you have experience with electronic repairs.
Parts You May Need
Flow meter assembly
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Water inlet valve
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Control board
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Flow meter assembly
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Water inlet valve
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Control board
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Flow meter assembly
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Water inlet valve
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Control board
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Flow meter assembly
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Water inlet valve
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Control board
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When to Call a Professional
If the error code returns after cleaning the flow meter and testing components, or if you are uncomfortable testing electrical parts with a multimeter, contact a qualified appliance technician. Control board replacement is best left to professionals.Frequently Asked Questions
What does Bosch dishwasher error code E04 mean?
Bosch error code E04 indicates a flow meter fault, meaning the dishwasher's control board is not detecting proper water flow, often due to a blocked or faulty flow meter.
How do I reset Bosch dishwasher error E04?
To reset, unplug the dishwasher for 1-2 minutes, then plug it back in. Press and hold the Start/Reset button for 3 seconds. Run a short cycle to see if the error clears.
Can a clogged filter cause error E04 on Bosch dishwasher?
While a clogged filter can cause poor performance, it rarely triggers a flow meter fault. However, cleaning the filter and sump area is good maintenance and may help.
Where is the flow meter on a Bosch dishwasher?
The flow meter is typically located near the water inlet valve, behind the lower kickplate or on the left side of the dishwasher. It is a small plastic housing with an impeller inside.
How much does it cost to fix Bosch dishwasher error E04?
If you DIY, cost is around $20-$50 for a replacement flow meter or inlet valve. Professional repair can cost $150-$300, depending on labor and parts.