All Bosch Dishwasher Error Codes — Complete Troubleshooting Guide (2026)
This comprehensive guide covers every known Bosch Dishwasher error code — 3 codes total. Each error includes what it means, how to fix it yourself, and when you should call a professional technician.
Detailed Error Code Guides
Error E01: Bosch Dishwasher error code E01 indicates a problem with the heater relay on the main control board. This error occurs when the control board fails to send the correct signal to the heater, resulting in an inability to heat the water properly.
Fix Bosch Dishwasher error code E01. Step-by-step guide to diagnose and resolve the heater relay on main control failed on Bosch dishwashers.
- Step 1: Reset the Main Control Board
- Step 2: Check the Heater Relay for Proper Function
- Step 3: Check the Power Supply to the Heater Relay
- ...see all 5 steps →
Tools needed: Multimeter, Phillips, Torx T20 screwdriver, Wire connectors (for testing)
Read full troubleshooting guide →Error E15-parts: Guide to the best replacement parts for fixing Bosch Dishwasher error code E15 (water in base pan). Includes float switches, inlet valves, drain hoses with compatibility info.
Top-rated float switches, water inlet valves, and drain hoses to fix Bosch dishwasher E15 water leak error. Part numbers, prices, and installation guide.
- Step 1: Diagnose Which Part Failed
- Step 2: Test the Float Switch
- Step 3: Replace the Faulty Part
Tools needed: Torx T20 screwdriver, Phillips screwdriver, Towels/sponge, Flashlight
Read full troubleshooting guide →Error E17: Bosch Dishwasher error code E17 indicates that the dishwasher has detected excessive water. This error means that the water level in the tub is too high, which can cause the dishwasher to malfunction or even leak.
Fix Bosch Dishwasher error code E17. Step-by-step guide to diagnose and resolve the overfill on Bosch dishwashers.
- Reset the Dishwasher
- Check the Water Level Sensor
- Inspect the Float Switch Assembly
- ...see all 5 steps →
Tools needed: Phillips #2 screwdriver, Torx T20 screwdriver, Multimeter
Read full troubleshooting guide →Common Bosch Dishwasher Problems
Beyond specific error codes, Bosch Dishwasher owners frequently encounter these issues:
- Error codes that keep coming back — Usually indicates the root cause wasn't fully addressed. Follow our complete repair guides above.
- Multiple error codes at once — Often points to a control board issue or power supply problem. Check our individual guides for related codes.
- Error code not listed here — Contact Bosch support directly or check your owner's manual. We update this guide as new codes are discovered.
Bosch Dishwasher Maintenance Tips
Prevent error codes before they appear with regular maintenance:
- Clean filters and drains monthly to prevent blockage errors
- Check water supply connections quarterly for leaks or kinks
- Run cleaning cycles as recommended in your owner's manual
- Keep the appliance level — uneven surfaces cause sensor errors
- Don't overload — excess weight triggers motor and balance errors
When to Call a Professional
While many Bosch Dishwasher error codes can be resolved with basic troubleshooting, call a certified technician if:
- The error persists after following all troubleshooting steps
- You see signs of electrical damage, burning smells, or water leaks
- The repair requires specialized tools or involves gas/electrical connections
- Your appliance is still under warranty — DIY repairs may void coverage