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Miele Washing Machine Error Code F45

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 14, 2026
⚠ High Severity 👨‍🔧 Call a Pro

Defective Flash RAM — incorrect data supplied

The control detected a fault in its Flash RAM and is being supplied incorrect data, so it halts with F45. Like F41/F43 this is a fault inside the main electronic unit rather than a mechanical part.

💰 DIY cost: $0–$0 👨‍🔧 Pro cost: $250–$550 Save $250+ by doing it yourself
Miele Washing Machine error code F45 on the display panel
How the F45 code appears on a Miele washing machine display

What Does Error Code F45 Mean on a Miele Washing Machine?

Defective Flash RAM — incorrect data supplied.

The control detected a fault in its Flash RAM and is being supplied incorrect data, so it halts with F45. Like F41/F43 this is a fault inside the main electronic unit rather than a mechanical part.

What Causes Error Code F45?

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

  1. 1
    Flash RAM failure 60% of cases
  2. 2
    Firmware corrupted 25% of cases
  3. 3
    Power disturbance during write 15% of cases

How to Fix Miele Washing Machine Error Code F45

👨‍🔧 Call a Pro Est. time: 1–3 hours
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Power cycle

    Switch off at the wall for several minutes to attempt a clear.

  2. 2

    Board diagnosis/replacement

    Persistent F45 means the electronic unit needs reflashing or replacement by Miele.

    🔩 Miele control board ($150–$350)

How to Reset Error Code F45

Switch off several minutes and restart. If F45 persists, the control unit needs service.

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

Did this guide fix your appliance?

When to Call a Professional

Flash RAM faults require Miele service — reflashing/coding is model-specific.

Average professional repair cost for this issue: $250–$550

Related Error Codes

F39
Electronic unit fault — main control failure
⚠ High Severity
F41
Faulty electronic memory — incorrect data
⚠ High Severity
F43
Appliance model not programmed
⚠ High Severity

Find Replacement Parts

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

🔩
Search PartSelect
Miele Washing Machine repair parts
🔧
Search RepairClinic
Step-by-step video guides

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

More Miele Washing Machine Error Codes

F11 Pump fault — water not draining F19 Drain time exceeded — slow or failed drain F16 Water protection system activated — flood protection triggered F53 Motor fault — drive motor failure F31 NTC temperature sensor fault F1 NTC temperature sensor short-circuited

Frequently Asked Questions

What does error code F45 mean on a Miele Washing Machine? +
Defective Flash RAM — incorrect data supplied
How do I fix error code F45 on my Miele Washing Machine? +
Start by Switch off at the wall for several minutes to attempt a clear.. If that doesn't resolve it, work through each step in the fix guide above.
How do I clear or reset error code F45? +
Switch off several minutes and restart. If F45 persists, the control unit needs service.
Is error code F45 serious? +
This is a high-severity error. You should address it soon. Running the appliance may cause further damage.

Sources & References

Content verified against manufacturer service documentation. Last verified: June 14, 2026.

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