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
Your Bosch dishwasher displays error code E04, which indicates a flow meter fault. This means the dishwasher is not detecting water flow correctly, often due to a blocked flow meter, faulty sensor, or control board issue. Follow the steps below to diagnose and fix the problem.
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Tools You'll Need

How to Fix Error Code E04

  1. Unplug the Dishwasher

    Always unplug the appliance before performing any maintenance.
  2. Turn Off the Water Supply

  3. Check for Kinked or Blocked Water Inlet Hose

    Place a towel or bucket under the hose to catch any water.
  4. Inspect the Flow Meter Assembly

  5. Test the Flow Meter with a Multimeter

    Ensure the dishwasher is unplugged before testing electrical components.
  6. Check the Water Inlet Valve

  7. Reset the Dishwasher

  8. 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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Flow meter assembly
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Water inlet valve
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Flow meter assembly
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Water inlet valve
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Flow meter assembly
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Water inlet valve
Check Price on Amazon
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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.