Bosch Washing Machine Error E04

⚡ Quick Answer: The Bosch washing machine E04 error indicates a problem with the drainage system, often caused by excessive suds or a blockage in the drain pump. This... ✅ DIY Fixable

What Does Error E04 Mean?

The Bosch washing machine E04 error indicates a problem with the drainage system, often caused by excessive suds or a blockage in the drain pump. This error typically occurs during the drain phase, preventing the washer from properly draining water and may cause the machine to stop mid-cycle. Common symptoms include visible foam in the drum, slow or no drainage, and the error code displayed on the screen. To resolve this, reduce detergent usage and clean the drain pump filter to eliminate any obstructions.

Common Symptoms:

  • Error appears during or at the end of drain phase
  • Washer stops mid‑cycle with code E04 displayed
  • Excessive foam visible in drum or during spin
  • Slow or no water drainage

Possible Causes

  • Excessive foam due to improper detergent or too much detergent (medium)
  • Clogged or obstructed drain pump / drain filter (medium)
  • Obstruction in drain hoses or sump area (medium)

How to Fix Error E04

DIY Fix Check and reduce foam/suds

  1. Stop the current cycle and let foam settle
  2. Ensure you use a high‑efficiency (HE) detergent appropriate for Bosch washers
  3. Reduce the amount of detergent in future cycles
  4. Run an extra rinse/spin cycle to clear suds

DIY Fix Clean drain pump filter and check for obstructions

  1. Unplug the washer from power
  2. Locate the drain pump access panel at the bottom front
  3. Place towels to catch water and slowly open the pump filter cover
  4. Remove lint, coins, debris from the filter and visible pump inlet
  5. Reinstall the filter and test the washer

Technician Only Inspect drain pump, hoses, and internal sump for blockages or failure

  1. Disconnect power and remove access panels
  2. Inspect and clean the full drainage pathway including sump and hose
  3. Test the drain pump’s electrical and mechanical operation
  4. Replace the drain pump if found faulty

Parts needed: drain pump, drain hose, sump assembly

🛑 When to Call a Pro:
  • If error persists after reducing detergent, cleaning filter, and checking for visible obstructions
  • If water leaks appear when cleaning the pump or hoses
  • If mechanical parts like the drain pump are suspected to be failing

Technical Specifications

wattage N/A
component Door Lock Mechanism
resistance N/A
part_number Bosch 00627415
voltage_rating 120V AC

Common Questions

What does E04 error mean on Bosch washing machine?

E04 indicates a drainage issue, often due to excessive foam or a blockage in the drain pump.

Can I fix Bosch washing machine E04 error myself?

Yes, you can reduce foam and clean the drain pump filter to try and resolve the issue.

How much does it cost to fix E04 error?

The estimated repair cost ranges from ¥8,000 to ¥25,000 depending on the service provider and model.

When should I call a technician for E04?

Call a technician if the error persists after cleaning or if you suspect mechanical failures.

Sources & References

Data last verified: 2026-01-16

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