Bosch Washing Machine E33/F33 error code
The machine detected too much detergent foam, which can overflow from the detergent drawer and interfere with washing and rinsing. It often happens with too much or old detergent, or on lightly soiled loads.
Also shown as: E33, F33
Last updated: September 30, 2026
What causes the E33/F33 error?
- Too much detergent for the load
- Old or degraded detergent foaming excessively
- Lightly soiled load washed with a full detergent dose
How to fix Bosch E33/F33 — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Calm the foam
Bosch's official remedy: mix one tablespoon of fabric softener with about 2 cups (0.5 liters) of water and pour it into compartment II to reduce the foam. Skip this if washing outdoor clothing, sportswear, or down-filled items. - Reduce detergent next time
Use less detergent, especially for lightly soiled laundry, following the dosage on the detergent packaging. - Run a rinse cycle
If foam remains, run an extra rinse or short cycle with no detergent to clear it out.
When to call a technician
- Foam overflows from the machine repeatedly even with tiny detergent doses
- The code appears with no detergent added at all
Frequently asked questions
Does too much detergent damage the washer?
Heavy foaming can leak from the drawer and leave residue inside the machine, so cutting back protects both the wash result and the appliance.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.
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