Bosch Washing Machine Error E33
⚡ Quick Answer: The Bosch washing machine E33 error indicates excessive foam detection, often due to too much detergent or the wrong type of detergent being used. Sym... ✅ DIY Fixable
What Does Error E33 Mean?
The Bosch washing machine E33 error indicates excessive foam detection, often due to too much detergent or the wrong type of detergent being used. Symptoms include an error display during the wash cycle, pausing of cycles due to foam, and visible foam around the detergent drawer or tub. Addressing these issues can often resolve the error.
Common Symptoms:
- Error displayed during wash cycle
- Cycle may pause due to excessive foam
- Foam may be visible around detergent drawer or tub
Possible Causes
- Excessive detergent use (high)
- Using wrong type of detergent (non-HE) or inappropriate detergent (medium)
- Residual detergent buildup in dispenser causing increased foam (medium)
How to Fix Error E33
DIY Fix Reduce foam by adjusting detergent use
- Check detergent packaging and machine manual for recommended amount based on load size and water hardness
- Use only high-efficiency (HE) detergent formulated for front‑load machines
- Reduce the amount of detergent, especially in soft water areas
DIY Fix Clean detergent drawer and run rinse cycle
- Remove detergent drawer and rinse under warm water to remove residue
- Run an empty rinse‑only cycle to clear excess suds from the tub
Technician Only Inspect water/foam sensors and related components
- Check for proper function of sensors that detect foam or water flow
- Inspect and clean connections to sensors if buildup is present
- Replace faulty sensor components if malfunctioning
Parts needed: foam level/water sensor, wiring/connectors
- If repeated E33 occurs after correct detergent usage and cleaning steps
- If error is accompanied by other fault codes or machine malfunctions
Next step
Choose the next step for E33
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
- Typical part-only price
- $20 - $120
- DIY difficulty
- Medium
- Estimated time
- 30-90 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Model-compatible Washing Machine parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
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Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Washing Machine Cleaner Tablets
Routine tub-cleaning supplies for residue and odor control. They do not repair a mechanical, drainage, or electronic fault.
Braided Washer Inlet Hoses
A maintenance replacement option for visibly worn external fill hoses. Verify thread size, length, and hot/cold connection requirements.
Washer Drain Hose Holder
Helps secure an external drain hose at the standpipe. It does not correct an internal pump or control fault.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| wattage | N/A |
|---|---|
| component | Water Level Sensor |
| resistance | 10-30 ohms |
| part_number | Bosch 00619936 |
| voltage_rating | 120V AC |
Common Questions
What does E33 error mean on Bosch washing machine?
E33 indicates excessive foam detection, often due to too much or incorrect detergent.
Can I fix Bosch washing machine E33 error myself?
Yes, reduce detergent usage, use HE detergent, and clean the detergent drawer.
How much does it cost to fix E33 error?
Estimated repair costs range from $50 to $200 depending on the required repairs.
When should I call a technician for E33?
Call if E33 recurs after correcting detergent use or if other error codes appear.
Sources & References
- Bosch UK: Washing machine E33 error (official)
- Bosch Singapore: E33 excess foam detected (official)
Data last verified: 2026-07-25
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