iPhone 14 Pro — sensor array 0x20000: Gyroscope on the board

High confidenceVerified sourceSMC: silent sensor

On the iPhone 14 Pro, 0x20000 means: Gyroscope on the board (logic board sandwich separation).

What does this code mean?

SMC “BSC failure” panic: the system management controller (built into the SoC) periodically waits for a response from each mandatory sensor; here, the logic board gyroscope has stopped responding, typically after the two layers separate. With no response, it forces a restart, which repeats roughly every 3 minutes (≈180 s) as long as the sensor stays silent.

Which part to test first?

No external part: check the gyroscope (U7300 according to Repair Wiki) and its pads, then the interposer; reball the sandwich or swap the lower board.

The same code on other models

Field cases

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Sources