iPhone SE (1st generation) — tp1a: Rear camera thermistor on the logic board
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On the iPhone SE (1st generation), tp1a means: Rear camera thermistor on the logic board (NTC network to the PMU).
What does this code mean?
Watchdog panic: thermalmonitord no longer receives the reading from TP1A; with no response for ~3 minutes, iOS restarts the iPhone. On iPhone SE (1st gen.), an iFixit answer identifies it from the schematic as the rear camera thermistor. The other thermistors (“forehead”, radio, CPU) connect to the PMU and to ground.
Which part to test first?
Look for a short to ground or an open line on the thermistor (NTC) network to the PMU using the schematic / boardview.
The same code on other models
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