Miele Dishwasher Error Code F19

F19 means the dishwasher's control system detected that the flow meter impeller, identified as component B3/4, is stiff and not rotating freely. The machine runs internal test routines to confirm the impeller moves without restriction, and when those tests fail, F19 is displayed. The error points to a mechanical fault in the flow meter or the associated water diverter assembly. The first recommended step is to replace the water diverter.

It is not recommended to continue running the dishwasher while F19 is active. Because the machine cannot verify proper water distribution, cycles may be incomplete, leaving dishes unwashed or potentially causing water to be misdirected internally. The dishwasher typically halts operation when this code appears to prevent these issues.

Repair costs depend on whether you hire a technician or do the work yourself. A professional repair including parts and labor typically ranges from $150 to $350, depending on your location and service rates. If you source the water diverter part yourself and complete the repair independently, parts alone generally range from $40 to $100. Miele is a premium appliance brand, so both parts and labor can sit toward the higher end of appliance repair pricing.

A knowledgeable DIYer may be able to address F19 by inspecting and clearing debris or scale from the flow meter area, but the primary fix involves replacing the water diverter assembly, which requires disassembling internal components. If you are not comfortable working inside the dishwasher's wash system, a qualified appliance technician should handle the repair. Attempting the repair without proper disassembly skills risks damaging other components.

A reset will not permanently clear F19 because the error is caused by a physical mechanical fault, not a temporary software or sensor glitch. The control system will re-run its flow meter test routines at the start of the next cycle and trigger the code again if the impeller is still restricted. The underlying cause, most commonly the water diverter, must be repaired or replaced to resolve the error.