Módulo de sensores del paquete de baterías defectuoso

The sensing board inside the traction battery — the electronics that read every cell group's voltage and every temperature sensor, and feed the battery management its raw data. When it fails, every measurement it made becomes suspect at once: impossible voltages, disagreeing temperatures, a burst of simultaneous battery codes that reads like a catastrophic pack failure and is not.

That burst is the tell. Forty cell groups do not fail together in an instant; one shared sensing board does — the corpus's one-shared-thing argument, inside the pack. The distinction is worth thousands, because the board is a fraction of a pack's price even though replacing it is pack-opening work. A battery condemned on a sudden cluster of wild readings deserves this diagnosis considered first.