Bauknecht Dishwasher Error E4

⚡ Quick Answer: The Bauknecht dishwasher E4 error code indicates a water overflow condition, often triggered by water detection in the base tray or a malfunction in t... ✅ DIY Fixable

What Does Error E4 Mean?

The Bauknecht dishwasher E4 error code indicates a water overflow condition, often triggered by water detection in the base tray or a malfunction in the drainage system. Symptoms include the dishwasher stopping shortly after starting, water accumulating inside or beneath the machine, and premature cycle termination. This issue may also appear alongside other error codes, such as F6, which points to water inlet problems. Addressing the E4 error typically involves checking for standing water, inspecting drain components, and ensuring the float and sensors are functioning correctly.

Common Symptoms:

  • Dishwasher stops operation soon after start displaying E4
  • Water present in base beneath filter or visible water remaining inside
  • Cycle prematurely ends due to perceived overflow or flooding
  • Error may appear with additional codes like F6 indicating water inlet issues

Possible Causes

  • Water detected in base tray causing overflow protection activation (medium)
  • Drainage blockage or malfunction (drain pump, hose or filter) (medium)
  • Incorrect water level detection due to faulty float or sensor (medium)

How to Fix Error E4

DIY Fix Basic Checks and Clearing Water

  1. Turn off and disconnect power to the dishwasher.
  2. Remove lower front panel and access base tray if visible; carefully remove standing water with absorbent cloths or towels.
  3. Check bottom of dishwasher under filters for water and remove it.
  4. Inspect visible drain filter and clean debris.
  5. Restart dishwasher to see if code clears.

DIY Fix Inspect Drain and Floating Components

  1. Inspect drain hose for kinks, blockages, or obstructions.
  2. Pull out and clean drain filters under the dishwasher bottom.
  3. Ensure float components move freely and are not obstructed by debris.

Technician Only Advanced Drain and Sensor Diagnostics

  1. Test drain pump operation and continuity with a multimeter.
  2. Examine float switch and water level sensors for proper operation; replace if defective.
  3. Inspect drain hose external connection at siphon and under sink for blockages.
  4. Verify flood detection circuit integrity and sensor harness connections.

Parts needed: Drain pump, Float switch / flood sensor, Drain hose, Water level sensor assembly

🛑 When to Call a Pro:
  • After water removal and basic cleaning, E4 persists on re‑powering
  • If internal components like pumps or sensors are not accessible or suspected defective
  • Visible leaks or substantial water accumulation continues after troubleshooting

Technical Specifications

wattage 1800W
component Float Switch
resistance 5-10 ohms
part_number Bauknecht 481227058000
voltage_rating 230V AC

Common Questions

What does E4 error mean on Bauknecht dishwasher?

E4 indicates a water overflow condition due to detected water in the base or drainage issues.

Can I fix Bauknecht dishwasher E4 error myself?

Yes, you can perform basic checks, like removing standing water and inspecting the drain and float components.

How much does it cost to fix E4 error?

Repair costs for the E4 error typically range from $50 to $250+, depending on the parts needed.

When should I call a technician for E4?

Call a technician if the E4 error persists after basic cleaning or if internal components are suspected to be defective.

Sources & References

Data last verified: 2026-07-07

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