iPhone 15 Pro Max — sensor array 0x300000: Charging port flex

High confidenceVerified sourceSMC: silent sensor

On the iPhone 15 Pro Max, 0x300000 means: Charging port flex (USB-C) — possibly together with the front sensors flex.

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; iFixit, Repair Wiki and iPad Rehab attribute this value to the charging port; in the lab, DFRWS gets it by disconnecting the charging port AND the proximity sensor (0x100000 + 0x200000). 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?

Check the seating and condition of the charging port flex (tears, corrosion, FPC connector pins), then test with a known-good genuine flex; if the panic persists, measure the connector pins on the logic board in diode mode.

The same code on other models

Field cases

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Sources