Thermador DWHD660WFM 24 in 42 dBA Sapphire Series Dishwasher with Star Dry and WiFi Connectivity F3 Error Fix: Water Leak Detected - Door Gasket Failure

Error code F3 on the Thermador DWHD660WFM 24 in 42 dBA Sapphire Series Dishwasher with Star Dry and WiFi Connectivity means: Water Leak Detected - Door Gasket Failure. Water is leaking from the dishwasher door due to a torn or degraded door gasket, risking water damage outside the appliance.

The most successful fix is "Replace Door Gasket" (medium difficulty, ~40 minutes). Estimated DIY cost: $50-$70. HomeMD has 2 community-ranked fixes for this error.

This error is rated critical severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Yes — the top-ranked community fix ("Replace Door Gasket") is rated medium difficulty and takes about 40 minutes. Tools needed: Flathead screwdriver, Soft cloth.

DIY cost: $50-$70. Professional repair typically costs $140-$190. Many homeowners save money by trying the top-ranked community fix first.

The Thermador DWHD660WFM 24 in 42 dBA Sapphire Series Dishwasher with Star Dry and WiFi Connectivity has 8 other known error codes, including: E1 (Water Inlet Valve Error), E2 (Drain Pump Failure), E3 (Door Lock Failure), E4 (Heater Element Failure), E5 (Water Temperature Sensor Fault), and 3 more.

Error code F3 also appears on 6 other Thermador models: MED301JS 30 in Masterpiece Series Single Wall Oven with 4.3 cu ft Capacity and Steam Bake, PODS301W 30 in Wall Oven with 4.3 cu ft Capacity and Convection Cooking, PRD366WGU Pro Grand Range, PRD486WDGU Pro Grand 48", PRL366WG 36 in Pro Grand Range with 5 Burners, 22,000 BTU Power Burner, and Convection Oven, T36BT925NS 36 in 20.9 cu ft Freedom® Collection French Door Refrigerator with WiFi Connectivity and ThermaFresh System. The fix may vary by model, so check each model's specific page for tailored repair steps.