Miele Dishwasher Error Code F51

• Dishwasher stops mid-cycle and displays F51 error code
• No water spray from upper and lower spray arms during washing
• Dishes remain dirty or unclean after cycle completion
• Water drains from the tub but doesn't spray during wash phases
• Audible humming or grinding sounds from the pump area
• Error code appears repeatedly on subsequent wash cycles

• Circulation pump motor failure or malfunction
• Clogged or blocked spray arm nozzles preventing pressure detection
• Debris in the pump intake filter restricting water flow
• Kinked or crimped inlet hose reducing water supply pressure
• Faulty pressure switch not recognizing adequate water circulation
• Defective pump impeller or internal pump damage
• Loose electrical connection to the circulation pump motor
• Low water pressure from home supply affecting pump operation
• Failed electronic control board detecting pump circuit failure

• Turn off the dishwasher at the circuit breaker for 60 seconds, then restore power to reset the appliance
• Verify the circuit breaker serving the dishwasher is in the ON position and has not tripped
• Check that the dishwasher door is fully closed and the latch engages completely
• Locate and clean the coarse filter (usually in the bottom tub) by removing any visible food debris or blockages
• Inspect both the upper and lower spray arms for clogs in their spray nozzles; clear any visible obstructions with a toothpick or small brush
• Ensure the water inlet valve under the sink is fully open (turn the shut-off valve counterclockwise until it stops)
• Verify adequate home water pressure by testing other faucets; low pressure throughout the home may affect the dishwasher
• Examine the inlet hose for kinks, cracks, or pinching that could restrict water flow to the unit
• Run the empty dishwasher on a short cycle after performing these checks to see if the error recurs