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thermalmonitord watchdog · missing sensor
Missing sensor(s): tb0v — Battery sensor TB0V (SMC panic, battery voltage)
The phone restarts about every 3 minutes with userspace watchdog timeout: no successful checkins from thermalmonitord and Missing sensor(s): tb0v.Single source
Where to look: Battery · Battery connector / data line
Seen with TB0T on iPhone 14 Pro Max.
Bench checks
- Test with a known-good battery.
- Inspect the battery connector and the data-line parts beside it.
Sources
- iFixit Answers - iPhone 14 Pro Max SMC panic TB0T TB0V (accessed 2026-09-28)
- iFixit - iPhone SMC Panic Assert (accessed 2026-09-26)
Hinglish me
Missing sensor tb0v: Battery sensor TB0V (SMC panic, battery voltage).
Kahan dekhein: Battery · Battery connector / data line
Known-good battery se test karo.
Battery connector aur uske paas ke data-line parts check karo.