Bosch dryer E01 error code
- Dryer
Bosch dryer E01 indicates the lint filter is blocked or not seated — common on WTG86400UC heat-pump dryers. The filter has two layers; rinse both under water until water flows freely. E01 can also appear if the filter is inserted upside down after cleaning.
Reviewed August 2025 · sources below
Safe to keep using?
No safety issue
This is a status or lock code, not a hardware fault.
How to fix E01
- Remove the lint filter and open the inner fine-mesh section if your model has a two-part filter.
- Rinse until water passes through — waxy residue blocks airflow.
- Dry fully and reinstall until it clicks seated.
- Run a short cycle — E01 should clear immediately if the filter was the cause.
- If E01 persists, clean the heat exchanger area per the manual — lint can bypass a dirty filter.
Call a pro when: Call a technician if E01 persists with a clean filter and visible heat-exchanger lint buildup.
Next step
Still having trouble after the code fix?
This code is usually a status or maintenance notice, not proof of a failed part. Try the steps above first; then describe what still isn't working.
Free guided checks · No account required · Don’t open live electrical, gas, or refrigerant equipment
What E01 means
Lint filter is blocked and needs to be cleaned.
Likely causes
Bosch heat-pump and condenser dryers stop when the filter cannot pass air.
Check: Remove the lint filter, rinse it with warm water, dry it, and reinstall.
Est. cost: $0–$0
Too many elbows or a crushed flex hose chokes airflow even after you clean lint.
Check: Run the dryer and confirm strong air at the outdoor vent flap. Shorten or replace crushed duct.
Est. cost: $0–$40
Guided repair checklist
Complete the safe checks one at a time. Progress is saved for this browser so you can continue later.
0 of 5 checks recorded
Recommended next action
Start with this check before considering replacement parts.
Check 1 of 5
Remove the lint filter and open the inner fine-mesh section if your model has a two-part filter.
Did the repair resolve the issue?
Restoring repair progress…
Questions about E01
What does E01 mean on Bosch dryer?
E01 is a blocked or improperly seated lint filter.
How do I reset Bosch E01?
Clean and reinstall the filter, then restart the cycle.
Do I need parts for E01?
No in most cases — cleaning fixes E01.
Why E01 after every load?
Check for a torn filter or lint bypassing into the heat exchanger.
Bosch E01 on specific models
Other Bosch Dryer codes
Prevent this problem next time
- Clean the lint filter after every load
Sources
Manufacturer meaning
The lint filter is blocked and needs to be cleaned.
FixApplianceCode guidance
Clean the lint filter. This is maintenance, not a failed part.
Source type: Manufacturer
Source: Bosch dryer error-code documentation
Last reviewed: 2026-08-24
Repair guidance is for informational purposes only. We do not guarantee that any fix will resolve your issue, and you assume all risk when following these steps. Terms & disclaimer
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