Bosch sells nothing in America with more electronics packed in than the HIIP057U. The HIIP057U is the Benchmark induction slide-in, with an electric oven of 4.6 cu ft and every Benchmark mode. One chassis holds the induction power modules, the oven control board, the cooling system and a large display.
Given that density, the electrical supply to the kitchen matters a great deal. When voltage sags under load, the range may throw intermittent errors that a simpler appliance would never show. If the errors change from day to day, the supply is a likelier culprit than any single part.
So we avoid swapping a control board as a first move. We measure circuit voltage under load, check the cooling fan, which is the first to wear on the induction side, and then work through the subsystems one at a time. If the supply is to blame, a replacement board would repeat the behavior.
Errors that come and go, and differ each time, often trace to the power feeding the range and not to one broken part. Measuring voltage while the range is loaded is a sensible first step.
A board swapped into a range with a sagging supply would act up the same way. Testing first usually saves money, and you see the price in writing before any part is ordered.
The cooling fan on the induction side. It runs hard whenever the cooktop is in use, so when we find wear on this range, we look at that fan before the other electronic parts.
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