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thermalmonitord watchdog · missing sensor
Missing sensor(s): prs0 — Barometer / air-pressure sensor (PRS0)
The phone restarts about every 3 minutes with userspace watchdog timeout: no successful checkins from thermalmonitord and Missing sensor(s): prs0.Multi-source
Where to look: Charge-port flex assembly (barometer is on it) · Charge-port connector / data lines
Bench checks
- Swap-test a known-good OEM/premium charge-port flex; many aftermarket charge ports omit the sensor.
- Inspect for damaged or missing resistors around the charge-port connector.
Board detail by model
Lines: I2C1_AOP_SCL, I2C1_AOP_SDA
Parts: R6822 (I2C1_AOP_SCL), R6823 (I2C1_AOP_SDA)
- Check R6822 and R6823 beside the charge-port connector.
- Check for damaged or missing resistors around the charging-port connector.
- Repair Wiki (12 page): PRS0 and Mic1 = charging-port flex.
- VCC: barometer on the charging-port flex or its line.
Sources
- iFixit - iPhone Kernel Panics (accessed 2026-09-26)
- VCC Board Repairs - iPhone panic log list (accessed 2026-09-26)
- Repair Wiki - Troubleshoot and fix iPhone random restarts using panic logs (accessed 2026-09-26)
Hinglish me
Missing sensor prs0: Barometer / air-pressure sensor (PRS0).
Kahan dekhein: Charge-port flex assembly (barometer isi par hota hai) · Charge-port connector / data lines
Known-good OEM/premium charge-port flex se swap-test karo; bahut se aftermarket charge port me sensor hota hi nahi.
Charge-port connector ke aas-paas damaged ya missing resistors check karo.