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Miele Washer F103 Error Code (Water Leak Detected)

F103 means the washer's internal leak sensor has detected water where it shouldn't be, and the machine has halted the cycle and activated the drain pump as a precaution.

What F103 Means

F103 means the washer's internal leak sensor has detected water where it shouldn't be, and the machine has halted the cycle and activated the drain pump as a precaution.

Common Causes of F103

  • A failed hose connection or supply line leak
  • A cracked or failing tub seal
  • A stuck or failed leak sensor giving a false trigger

🔧 One Safe Check You Can Try

Check the floor around and underneath the machine for visible water before doing anything else, and don't run another cycle until you've confirmed there's no active leak.

⚠ Why You Shouldn't Go Further Than That

  • An active internal leak is a real water-damage risk to your home, and running the machine again before confirming the source risks making it worse.

Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.

Other Washer Error Codes

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