Error Code: E33 / F33 Difficulty: Easy
Problem: Too much foam has been detected.
How to Fix E33 / F33 Error (Step-by-Step)
- Cancel the current cycle and power off the appliance. Unplug it from the wall for safety.
- Open the door and remove all of the laundry from the drum.
- Using a damp cloth, thoroughly wipe down the entire inside of the drum, the door, and the rubber door seal to remove all visible foam and suds residue.
- For persistent foam, some models suggest pouring a mixture of one tablespoon of fabric softener and a half-liter of water into the detergent dispenser and running a rinse-only or drain cycle without any laundry.
- Once the foam is cleared, plug the appliance back in and run a short, empty cycle to ensure the error does not reappear.
- To prevent this error in the future, reduce the amount of detergent you are using, especially for small or lightly soiled loads.
- Always use a High-Efficiency (HE) detergent specifically designed for modern front-loading appliances, as these produce fewer suds.
- Turn the appliance off, wait about 2 minutes, then turn it back on.
What to Check Next on This Bosch Dryer
Bosch Dryer Error E33 / F33: Use the code, light, or symbol as the starting clue, then confirm what the dryer actually does before ordering parts.
- 1. Unplug the dryer before removing panels, checking the heater, thermal fuse, moisture sensor, door switch, motor, fan, harness, or control board.
- 2. Clean the lint screen and verify the full vent path has strong airflow before replacing heat or control parts.
- 3. Keep E33 and F33 together on this grouped Bosch dryer page: both should be checked against airflow, heat demand, sensor feedback, harness connections, and the control response before parts are ordered.
- 4. Check the door latch, drum movement, lint buildup, vent restriction, moisture sensor bars, loose connectors, and signs of overheating before ordering parts.
- 5. Run a timed dry test after airflow corrections and note whether the failure is no start, no heat, weak airflow, long dry time, or display/control behavior.
- 6. Replace a part only after the same symptom repeats and model-specific checks point to that part category. Match any replacement to the complete Bosch dryer model number on the appliance tag.
If the issue returns after these checks, match replacement parts to the complete Bosch dryer model number from the appliance tag. The same display clue can point to different components depending on the exact model and when the failure appears.
Recommended Parts to Check
No exact official OEM part number is listed here because the correct Bosch dryer part can vary by complete model number. These are targeted part-category searches, not universal fit claims.
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Bosch dryer thermal fuseCommon replacement category: Thermal fuseFit note: Exact OEM part number varies by full Bosch dryer model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for no-heat or no-start symptoms after vent and airflow checks. -
Bosch dryer heating elementCommon replacement category: Heating elementFit note: Exact OEM part number varies by full Bosch dryer model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for electric dryer heat symptoms after lint, vent, and airflow issues are ruled out. -
Bosch dryer electronic control boardCommon replacement category: Electronic control boardFit note: Exact OEM part number varies by full Bosch dryer model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for persistent control or display faults after connector and power checks.
Before ordering: match the part to the complete Bosch dryer model number on the appliance tag.
When It’s Better to Replace Than Repair
Dryer repairs are often worth it for small parts, but repeated heating, motor, drum, or control failures can point toward replacement.
Confirm gas vs electric, venting, voltage, doorway clearance, and laundry-space dimensions before ordering.
For repair parts, verify exact fit with the full dryer model number before buying; these links are general replacement-appliance shopping options.
- [OK]Thermal fuse or heater failures keep returning
- [OK]Belt, roller, or motor repairs exceed unit value
- [OK]Door switch or control issues stack with other faults
- [OK]Older dryer has long dry times even after vent cleaning
Recommended Dryer Replacement Options
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Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
More options (for a better recommendation)
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Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
Read Editorial Standards →Browse all Bosch error codes: Bosch Error Codes
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