iPhone 14 Pro Max — sensor array 0x1400000: USB module circuit: component
On the iPhone 14 Pro Max, 0x1400000 means: USB module circuit: component (microphone) on the charging flex or logic board path to the PMU.
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; this code was obtained in the lab when the electrical path between the microphone component on the USB flex, the filter and the logic board PMU is interrupted. 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?
First replace the charging port flex with a known-good part; if the panic persists, measure the connector and the filter on the logic board in diode mode (OL = damaged component) and bridge if the pads are intact.
The same code on other models
- iPhone 14 ProUSB module circuit: component
Field cases
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