Spencer C Flower Mound , TX February 17, 2025 Appliance: Bosch Dishwasher SHXM78Z55N/01 Bosch Dishwasher Shxm78z55n/01: E15 error code. How to replace Nut. Kept getting water in the water pan of my Bosch 800 dishwasher. Appliance company wanted $1000 to change out an entire pump system. I determined the leak was from this nut and seal. Replaced and no more water! 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes