- Appliances
- Dryers
E01
Bosch E01 on a tumble dryer: fluff filter blocked
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
On a Bosch tumble dryer, E01 means the fluff filter has become blocked with fluff or fabric softener residue. Unplug the dryer, take the filter out of the door and clean it before starting another programme.
Safety first
Stop and check this first
- Fluff building up in a hot dryer is combustible: do not run it with a dirty filter or without one, and do not leave it running with nobody home while E01 keeps returning.
Safe checks you can perform
- Door fluff filter
- Softener residue on the mesh
- Code repeat with a clean filter
Leave these tasks to a qualified professional
- Do not attempt this professional task: Air path inspection
- Do not attempt this professional task: Drying test after the work
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Air path inspection
What they doWith the dryer disconnected from the mains, the technician checks the air path from the filter inwards for built up fluff or obstructions.
They must show youwhere the fluff or blockage was, with before and after photos.
In writingthe section checked, what was cleaned or replaced and why.
Drying test after the work
What they doThe technician runs a full programme with a load and checks E01 does not return.
They must show youa cycle finished with no code.
In writingthe programme tested, the result and the date; for any replaced part, its reference and the reason.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Door fluff filter
- Who:
- you, no tools, dryer unplugged.
- How:
- open the door, take out the filter, open it and wipe off the fluff with a cloth. Bosch advises doing this after every cycle.
- Result that matters:
- whether the mesh was covered in fluff.
- If there was a thick layer:
- this is the most likely cause; refit it and try a short programme.
- If it was nearly clean:
- move on to the water test to rule out softener.
- Evidence to keep:
- a photo of the filter before cleaning.
Evidence: Dryer Error Code E01 | Bosch
Softener residue on the mesh
- Who:
- you, at the sink.
- How:
- run tap water over the filter mesh and see whether the water passes through or sits on top.
- Result that matters:
- water going through the mesh without pooling.
- If water sits on top:
- there is a softener film; rinse the mesh and let it dry before refitting.
- If water passes freely:
- softener is ruled out as the cause.
- Evidence to keep:
- a note of whether water passed and what you did.
Evidence: Dryer Error Code E01 | Bosch
Code repeat with a clean filter
- Who:
- you to watch; a technician for the rest.
- How:
- with the filter clean and dry, run a normal programme with a half load and see whether E01 returns.
- Result that matters:
- whether the code comes back and when in the programme.
- If it does not come back:
- it confirms the filter was the cause.
- If it comes back the same:
- the blockage is elsewhere; do not take the dryer apart, book the service.
- Evidence to keep:
- a photo of the display with the code and the minute it appeared.
Evidence: Dryer Error Code E01 | Bosch
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- Bosch
- Product type
- Dryers
Known code variants
- Bosch dishwasher E01
- Bosch dryer E01
- Bosch dryer E01 fluff filter
- Bosch E01
- Bosch E01 error
- Bosch E01 error tumble dryer
- Bosch E01 secadora
- código E01 lavavajillas Bosch
- E 01
- E01 Bosch dishwasher
- E1
- E:01
- Error 01
- error E01 lavavajillas Bosch
- error E01 secadora Bosch
- lavavajillas Bosch E01
- Philips cafetera E01
- Philips E01
- Philips error 01
- Philips espresso E01
- secadora Bosch E01 filtro de pelusas
What it means
Bosch defines E01 as the fluff filter blocked with fabric softener residue, which is hard to see, or with fluff. Warm air leaving the drum passes through that filter; when it clogs, the control detects that air is not flowing as it should. The filter is the cause Bosch names, but the code only describes poor airflow: if it comes back with a clean filter, the blockage is further along the air path.
Warnings and stop conditions
- Higheditorial warning
Fluff building up in a hot dryer is combustible: do not run it with a dirty filter or without one, and do not leave it running with nobody home while E01 keeps returning.
Evidence: Dryer Error Code E01 | Bosch
Symptoms and causes
Probable causes · in order
- Fluff built up on the door filterCommon
Easy to see: a layer of fluff on the mesh when you open the filter. This is what Bosch names first and you can clear it yourself.
Evidence: Dryer Error Code E01 | Bosch
- Fabric softener film on the meshPossible
The mesh looks clean but water does not pass through it well when rinsed; Bosch warns this residue is hard to detect.
Evidence: Dryer Error Code E01 | Bosch
- Blockage beyond the filterPossible
If E01 returns with the filter washed and dry, air is held up elsewhere in the air path and a technician has to check it.
Evidence: Dryer Error Code E01 | Bosch
Virtual technician
Does E01 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
BSH Home Appliances / Bosch · official_doc
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