Aeg Dishwasher Error E4

⚡ Quick Answer: The AEG Dishwasher E4 error indicates a water overflow condition, often caused by excessive water input or a leak. This error may also arise from comm... ✅ DIY Fixable

What Does Error E4 Mean?

The AEG Dishwasher E4 error indicates a water overflow condition, often caused by excessive water input or a leak. This error may also arise from communication failures between the main PCB and display PCB in integrated models. Symptoms include the E4 code on the display, acoustic warnings, and possible cycle interruptions or stoppages. Check for leaks and ensure proper drainage to resolve the issue.

Common Symptoms:

  • E4 displayed on control panel
  • Dishwasher may emit acoustic warning
  • Cycle stops or won’t start
  • Possible water leakage or water in base pan

Possible Causes

  • Water overflow/leakage detected by internal sensors (high)
  • Communication failure between main PCB and display PCB (integrated models) (high)

How to Fix Error E4

DIY Fix Check for water overflow/leaks and basic supply/drain issues

  1. Turn off water supply to dishwasher
  2. Inspect the area under/around dishwasher for signs of leaks or water in base pan
  3. Ensure the drain hose is correctly connected and not kinked
  4. Clean dishwasher filters and check sink drain functionality

Technician Only Diagnose and repair internal water detection or control communication faults

  1. Access dishwasher base to inspect for trapped water and verify float/overflow sensors
  2. Test and verify proper operation of inlet water valve and water level sensors
  3. Check communication between main PCB and display PCB on integrated models
  4. Replace faulty sensors or PCBs as required

Parts needed: Float/overflow sensor, Water inlet valve, Control PCB, Display PCB

🛑 When to Call a Pro:
  • If error persists after basic checks
  • If water is present under the dishwasher base pan
  • If there is no obvious external water supply/drain issue

Technical Specifications

wattage 1800W
component Water Level Sensor
resistance 5-15 ohms
part_number AEG 1240000000
voltage_rating 230V AC

Common Questions

What does E4 error mean on AEG Dishwasher?

E4 error indicates a water overflow condition, possibly due to leaks or communication issues.

Can I fix AEG Dishwasher E4 error myself?

Yes, check for leaks, ensure the drain hose is connected properly, and inspect for any water in the base.

How much does it cost to fix E4 error?

Repair costs for the E4 error range from $100 to $400+ depending on parts and labor needed.

When should I call a technician for E4?

Call a technician if the error persists after basic checks or if water is found under the dishwasher.

Sources & References

Data last verified: 2026-03-13

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