No, the "E15" error code on a Siemens or Bosch dishwasher does not mean the appliance is permanently broken or ruined. Instead, it is an advanced safety feature indicating that water has leaked into the base tray beneath the tub, causing the anti-flood float switch to trip and shut down operations to prevent floor damage. This is often caused by a loose hose clamp, condensation runoff, or a minor seal leak. You can troubleshoot leak errors safely by unplugging the unit. You can verify that your corrective action is successful when tilting the machine to drain the base pan, drying out the float sensor, and fixing the minor leak allows the dishwasher to operate normally again.
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