Induction cooktops monitor the temperature of both the cooking surface and the internal electronics, and will shut a zone down automatically if either reads outside a safe range — most often triggered by an empty pan left on high heat, a pan that’s boiled completely dry, or electronics running hot from an obstructed vent underneath the unit.
A single shutoff during heavy or unattended cooking usually isn’t a problem — it’s the safety feature working as intended. A zone that shuts off repeatedly during normal, attended cooking, or won’t reset after cooling, is the situation that points to an actual sensor or electronics issue worth a diagnostic visit.