Dishwasher High Severity
F51 Miele Error Code

Circulation Pump Fault

The F51 error code means the circulation pump (wash motor) in your Miele dishwasher is not running correctly. The control board has detected that the pump is either not starting, drawing abnormal current, or not reaching the expected speed. Without the circulation pump, water cannot be sprayed through the wash arms.

~25%

DIY Fixable

$250-500

Typical Repair Cost

1-3 hrs

Pro Repair Time

Quick Assessment

Answer to continue safely

Is it safe to keep using?

No. Without the circulation pump, the dishwasher cannot wash dishes. Running cycles with a faulty pump wastes water and energy. Resolve F51 before using the machine.

Can I reset the code?

Yes. Yes, but a reset only helps if the pump was temporarily overloaded. If F51 returns on the next cycle, the pump or its motor has a physical fault.

When to stop immediately?

Stop if you notice: The pump makes no sound at all when it should be running, You hear a loud grinding or buzzing from the pump.

Symptoms You May Notice

No water spray inside the tub

Opening the door mid-cycle reveals standing water but no spraying action from the wash arms

Dishes come out completely unwashed

Food remains untouched because water was never circulated over the dishes

Unusual sounds or silence

The pump may hum loudly without spinning, make a grinding noise, or be completely silent

F51 appears early in the cycle

The code typically triggers shortly after the fill phase when the pump should start spraying

Possible Causes

1

Foreign Object Jamming the Impeller

A piece of broken glass, a bone, an olive pit, or a small utensil has wedged into the pump impeller, preventing it from turning.

DIY Possible
2

Burned-Out Pump Motor

The electric motor in the circulation pump has failed — windings are open or shorted. More common in machines older than 8 years.

Requires Professional
3

Seized Pump Bearings

Lack of use (machine sitting unused for months) or mineral buildup has caused the pump shaft bearings to seize.

Requires Professional
4

Capacitor Failure (Older Models)

The start capacitor that gives the pump motor its initial torque has failed. The motor hums but cannot turn.

Requires Professional
5

Wiring or Control Board Issue

A loose connector, broken wire, or failed relay on the control board prevents power from reaching the pump.

Requires Professional

Safe Checks You Can Do

These checks are safe for homeowners. No disassembly required. Do not remove panels or access internal components.
  1. 1

    Power Reset

    Turn off the dishwasher at the mains for 5 minutes. Sometimes the pump controller needs a fresh start after a current overload event.

    After the reset, listen carefully when the cycle reaches the wash phase — you should hear the pump motor spinning up.

  2. 2

    Check for Jammed Objects

    Remove the lower rack and the spray arm (it usually unclips or unscrews). Remove the filters. Look into the sump opening for any foreign objects — glass, bones, pits, or small utensils.

    Shine a flashlight into the sump — small clear glass pieces are easy to miss.

  3. 3

    Try to Turn the Pump Manually

    With the filters removed, you can sometimes see or reach the pump impeller at the bottom of the sump. Try to rotate it gently with a wooden spoon handle. It should turn freely.

    If the impeller is stuck or grinds, something is blocking it. If it spins freely but the pump still does not run, the motor itself may have failed.

  4. 4

    Run a Pre-Rinse Program

    Select the shortest available program (pre-rinse or quick rinse). This forces the pump to start quickly. Listen for motor sounds and check if water reaches the spray arms.

    If the pump works on a cold pre-rinse but fails during a hot cycle, the issue may be heat-related (thermal fuse or overheating motor).

  5. 5

    Check Electrical Supply

    Verify the dishwasher is receiving full power — check the household breaker and the outlet. A low-voltage supply can prevent the motor from starting.

    If other appliances on the same circuit are also underperforming, the issue may be at your breaker panel.

When to Call a Professional

Contact a qualified Miele technician if:

  • The pump motor does not run despite confirmed power supply
  • The impeller is free but the motor still fails to start
  • F51 persists after removing any foreign objects
  • The pump motor smells burned or shows scorch marks
  • The machine is under warranty — pump replacement is covered

Need Professional Help?

Find qualified Miele technicians in your area for proper diagnostics and repair.

Schedule Appointment

More Dishwasher Error Codes

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F87 F86 F67 F63 F53 F52 F69 F78 F68 F47 F40 F85