When a high-end Bosch residential dishwasher door keeps popping open spontaneously during a wash cycle or right when you press start, the issue is typically caused by a worn-out plastic latch hook, broken internal spring fingers inside the upper frame catch mechanism, a misaligned cabinet installation causing the frame to warp, or a heavy accumulation of food debris caked around the door seal. Bosch units rely on a precise latch engagement to trigger the internal microswitch. You can troubleshoot door latches easily by inspecting the locking components. You can verify that your corrective action is successful when replacing a worn plastic latch hook or adjusting the cabinet mounting brackets allows the door to stay firmly locked shut.
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