Bosch Washing Machine Error Code F01

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: July 19, 2026

⚠ Medium Severity 🔧 Easy DIY Also shown as: E01

Water intake timeout — machine failed to fill within the expected time

The most common cause of the F01 error on a Bosch washing machine is water tap closed or partially open (~40% of cases); start with: open the water tap fully.

💰 DIY cost: $0–$75 👨‍🔧 Pro cost: $120–$250 Save $120+ by doing it yourself

Bosch Washing Machine error code F01 on the display panel — How the F01 code appears on a Bosch washing machine display

What Does Error Code F01 Mean on a Bosch Washing Machine?

Water intake timeout — machine failed to fill within the expected time.

The control board monitors the flow meter and pressure sensor during the fill phase. F01 (also shown as E01) fires when the expected water volume is not reached before the fill timer expires — the board sees too little inflow. This points to a supply-side restriction rather than a drain fault. It differs from E17/F17, which flag an aquastop or leak-protection trip, and from drain-timeout codes, which occur when water cannot leave the tub.

Models affected: Bosch front-load washers across multiple series, including models such as the WAT28400UC and WGA12400UC

What owners report: Owners commonly report F01 appearing at the start of a cycle, often after the tap was left partly closed or the hose got pinched behind the machine during installation or a move. Many find the quick win is simply opening the tap fully or cleaning the small mesh inlet filter, which can be clogged with sediment.

What Causes Error Code F01?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

1

Water tap closed or partially open 40% of cases
2

Inlet hose kinked or fill-filter blocked 30% of cases
3

Low household water pressure (below 1 bar) 20% of cases
4

Inlet valve failed 10% of cases

How to Fix Bosch Washing Machine Error Code F01

🔧 Easy DIY Est. time: 10–20 min

⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.

1

Open the water tap fully

Confirm the tap behind or beneath the machine is completely open.
2

Check and straighten the fill hose

Look for kinks along the hose path.
3

Clean the fill-hose inlet filter

Remove the hose at the machine connection and clean the small mesh filter.
4

Test the inlet valve

If supply is confirmed, test solenoid continuity.

🔩 Bosch washer inlet valve ($35–$75)

How to Reset Error Code F01

Open the tap fully, clear any kinks, then restart the cycle.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full Bosch washer reset guide → Enter diagnostic mode → Symptom guide: Washer not filling →

Did this guide fix your appliance?

When to Call a Professional

If supply is confirmed and F01 persists, replace the water inlet valve.

Average professional repair cost for this issue: $120–$250

Related Error Codes

E17

Water intake fault — fill time exceeded

⚠ Medium Severity

E17

Water intake fault — fill time exceeded

⚠ Medium Severity

Same Code on Other Brands

Error code F01 appears on these other brands too. See every brand that shows F01 →

Whirlpool Dryer F01

Main control board failure

Maytag Dryer F01

Electronic control board failure

Maytag Oven F1

ERC control board failure / clock fault — watchdog reset

Broan-NuTone Range Hood F01

Heat sensor tripped — oven or cooktop overheating detected

Find Replacement Parts

Use these links to find the exact replacement parts for your Bosch Washing Machine:

🔩

Search PartSelect

Bosch Washing Machine repair parts

🔧

Search RepairClinic

Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More Bosch Washing Machine Error Codes

E18 Drain time exceeded — water not draining within expected time E02 Door lock failure — cannot lock door for cycle E04 Anti-flood device activated — water detected in base F02 Heating timeout — water did not reach the target temperature F03 Drain timeout — water did not drain within the expected time F04 Motor fault — drive motor not running correctly

Frequently Asked Questions

Can I keep using my Bosch Washing Machine when error F01 appears? +

You often can for a cycle or two, but the water-supply issue behind F01 will keep interrupting normal operation until it is fixed. Plan the repair rather than ignoring the code.

What most commonly causes F01 on a Bosch Washing Machine? +

Across reported Bosch washing machine repairs, the most frequent is water tap closed or partially open (40% of cases), inlet hose kinked or fill-filter blocked (30%), then low household water pressure (below 1 bar) (20%). Check them in that order before replacing any parts.

F01 keeps coming back after a reset — what should I check next? +

A reset only clears the stored F01 fault; if it returns, the water-supply problem is still present. Move on to the physical checks — open the water tap fully, then check and straighten the fill hose — since the code will reappear until the root cause is resolved. This is a beginner-friendly job needing only basic hand tools.

How much does it cost to fix Bosch Washing Machine error F01? +

A DIY repair typically runs $0–$75 in parts, versus $120–$250 for a professional service call, so handling it yourself saves around $120. Expect the work to take about 10–20 minutes.

Which Bosch Washing Machine models show error F01? +

F01 is documented on Bosch front-load washers across multiple series, including models such as the WAT28400UC and WGA12400UC. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

• Bosch Home Appliances Service — official manufacturer documentation
• Our editorial & verification policy

Content verified against manufacturer service documentation. Last verified: July 19, 2026.

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