How to Fix Bosch SHPM65Z55N Dishwasher E15 Error Code

Quick Diagnosis

The E15 error code indicates that the flood protection sensor (AquaStop) has detected water in the dishwasher's bottom base pan. This sensor is triggered by a physical float switch to prevent home flooding when an internal leak occurs.

Technical diagnostic blueprint diagram for the Bosch SHPM65Z55N Dishwasher showing symptoms of E15 Error Code.

Step-by-Step Resolution

  1. 1

    Unplug the dishwasher or shut off the dedicated circuit breaker in the home service panel.

  2. 2

    Shut off the water supply valve located under the sink.

  3. 3

    Use a Torx screwdriver to remove the lower front kickplate panel from the dishwasher chassis.

  4. 4

    Use a towel or sponge to mop up all standing water from the plastic base pan underneath the tub.

  5. 5

    Locate the white styrofoam float switch in the center of the base pan and verify it moves freely up and down without binding.

  6. 6

    Let the area air dry completely, reinstall the kickplate panel, reconnect the power, and run a test cycle.

Alternative Causes & Edge Cases

  • Applies to Thermador and Gaggenau dishwasher models built on the same Bosch platform.
  • Using non-dishwasher detergent or too much rinse aid can cause oversudsing, which leaks into the base pan and triggers this error.