Bosch Washing Machine Error Code E33 — Excessive Foam
What this means
Error E33 means the washer has detected excessive foam inside the drum. This is typically caused by using too much detergent, using non-HE detergent in an HE machine, or using the wrong type of detergent. Excess suds interfere with the wash and drain cycles and can cause leaks.
Alternate codes: F33
Step-by-step fix
4 stepsRun a rinse and spin cycle
Select a rinse and spin cycle to flush out the excess suds.
You may need to run this cycle 2–3 times until suds are gone.
Reduce detergent next time
Use less detergent on future loads. Follow the manufacturer's dosing instructions on the detergent packaging.
For soft water areas, use about half the recommended amount.
Switch to HE detergent
Only use High Efficiency (HE) detergent in your Bosch washer. Regular detergent produces too many suds.
Look for the HE symbol on the detergent bottle.
Clean the detergent dispenser
Remove and clean the dispenser drawer to remove old detergent buildup that can add extra suds.
When to call a professional
This is almost always a detergent issue. No professional service is needed unless the foam sensor itself is faulty.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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