Turn off the Bosch dishwasher and disconnect it from power before starting 🔧. Remove the lower rack and take out the filter to clean away trapped food particles or grease buildup. Check the drain hose for kinks, bends, or blockages that may prevent proper water flow. Inspect the drain pump for debris or objects stuck inside that stop it from spinning. If the Bosch dishwasher still does not drain, the drain pump or motor may need replacement to restore normal operation.