- Appliances
- Washing machines
F17
Bosch F17 on washing machine: inlet filters blocked or low water pressure
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
Your Bosch washer shows F17 (or F29) because the water connection or AquaStop hose filters are blocked, or the water pressure is too low. Turn off the tap, clean the filters with a small brush and check the tap flow.
Safety first
Stop and check this first
- Do not immerse the AquaStop hose to clean it: Bosch says it contains an electric valve. Always turn the tap off before removing any hose.
Safe checks you can perform
- Filter at the tap end
- Rear filter (models without AquaStop)
- Tap flow
Leave these tasks to a qualified professional
- Do not attempt this professional task: Pressure check by a plumber
- Do not attempt this professional task: Washer water inlet check
What a technician must be able to justify
A technician is coming
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.
Pressure check by a plumber
What they doA plumber measures the pressure and flow at the washer water supply, as Bosch advises when pressure is low.
They must show youthe pressure or flow measured at the supply.
In writingthe measurement and what was corrected in the plumbing.
Washer water inlet check
What they doIf water arrives properly and F17 stays, Bosch service checks the water inlet with the washer unplugged.
They must show youthe fault reproduced with clean filters and correct flow.
In writingthe cause found, any replaced part and a fill test without the code.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Checks and evidence, step by step
Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
- 1
Filter at the tap end
No special tools
Procedure
- Who:
- you.
- How:
- turn the tap off, take the hose off the tap and clean the filter with a small brush, as Bosch instructs. If it is an AquaStop hose, do not immerse it: it contains an electric valve.
- Result that matters:
- a filter free of scale and debris.
- If it was dirty:
- that is the most likely cause; reconnect and test.
- If it was clean:
- move on to the rear filter or the flow.
- Evidence to keep:
- a photo of the filter before and after.
Evidence: Bosch Washer Error Codes
- 2
Rear filter (models without AquaStop)
Tools required
Procedure
- Who:
- you, with the tap off and the washer unplugged.
- How:
- remove the hose from the back of the washer, take out the filter with pliers and clean it, as Bosch instructs. Reconnect and check for leaks.
- Result that matters:
- a clean filter and a connection with no leaks.
- If it was dirty:
- that was the likely cause.
- If it leaks when reconnected:
- turn the tap off and tighten the connection before use.
- Evidence to keep:
- a photo of the filter and of the dry connection.
Do this only with the tap off and the washer unplugged. Do not open the housing or remove the valve: the filter comes out from the hose connection.
Evidence: Bosch Washer Error Codes
- 3
Tap flow
No special tools
Procedure
- Who:
- you.
- How:
- open the tap fully; Bosch says about 10 liters (2.5 gallons) per minute must flow. You can measure it with a bucket and a timer.
- Result that matters:
- knowing whether enough water arrives.
- If the flow is good and F17 returns:
- pressure is ruled out; call Bosch service.
- If the flow is low:
- pressure is the cause; Bosch says to call a plumber.
- Evidence to keep:
- a note of the liters measured in one minute.
Evidence: Bosch Washer Error Codes
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- Bosch
- Product type
- Washing machines
Known code variants
- Bosch F17 lavadora
- Bosch F17 washer
- Bosch F29 lavadora
- Bosch F29 washer
- Bosch washer F17 error
- code erreur F17 lave-linge Siemens
- codice E17 Siemens
- código E17 Siemens
- E00-17
- erreur E17 Siemens
- error F17 lavadora Bosch
- error F17 lavadora Siemens
- errore F17 lavatrice Siemens
- F17 Siemens
- F29
- Siemens E17
- Siemens F17
- Siemens Fehlercode E17
- Siemens Waschmaschine Fehler F17
- Siemens washer F17
- Siemens washing machine E17
What it means
Bosch groups E17, F17 and F29: filters in the water connection or AquaStop hose blocked, or water pressure too low. Bosch documents it on its US washer page. Its fix is to clean the supply hose filters and check that the fully open tap delivers about 10 liters (2.5 gallons) per minute; if the pressure is low, it says to contact a plumber. Bosch warns that the AquaStop contains an electric valve and must not be immersed. The code alone does not prove a washer fault.
Warnings and stop conditions
- Mediumsource verified
Do not immerse the AquaStop hose to clean it: Bosch says it contains an electric valve. Always turn the tap off before removing any hose.
Evidence: Bosch Washer Error Codes
Symptoms and causes
Probable causes · in order
- Blocked inlet filtersCommon
The filters at the tap end or at the back of the washer have scale or debris. You see them when the hose is removed, and the code clears after cleaning.
Evidence: Bosch Washer Error Codes
- Low water pressurePossible
The filters are clean but the open tap does not deliver about 10 liters per minute. Bosch then refers you to a plumber.
Evidence: Bosch Washer Error Codes
Virtual technician
Does F17 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
Bosch · 2026 · official_doc
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