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thermalmonitord watchdog · missing sensor
Missing sensor(s): tp1a — TP1A thermistor (rear camera, single field source)
The phone restarts about every 3 minutes with userspace watchdog timeout: no successful checkins from thermalmonitord and Missing sensor(s): tp1a.Single source
Where to look: Rear camera (thermistor)
Only one field source (SE 1st gen). Swap-test the rear camera before board work.
Bench checks
Isolate with known-good parts / a known-good housing.
Sources
- iFixit Answers - iPhone SE (1st gen) TP0Z/TP1A/TP3R/TP4H (accessed 2026-09-26)
Hinglish me
Missing sensor tp1a: TP1A thermistor (rear camera, sirf ek field source).
Kahan dekhein: Rear camera (thermistor)