Home › Panic codes › Missing sensor tg0v
thermalmonitord watchdog · missing sensor
Missing sensor(s): tg0v — Battery sensor TG0V (battery voltage)
The phone restarts about every 3 minutes with userspace watchdog timeout: no successful checkins from thermalmonitord and Missing sensor(s): tg0v.Multi-source
Where to look: Battery · Battery connector
iFixit Kernel Panics: battery or its connector; on iPhone 11 Pro / Pro Max also the charge port assembly (second battery connector).
Bench checks
- Test with a known-good battery.
- Inspect the battery connector and nearby parts.
- Diode-mode the battery data pins.
Board detail by model
Lines: PMU_TO_BATTERY_SWI
- Swap the charge-port flex as well as the battery.
Lines: I2C2_SMC_SCL_CONN, I2C2_SMC_SDA_CONN
Parts: R3201, R3202
Lines: I2C2_SMC_SDA_1V8, I2C2_SMC_SCL_1V8
Parts: R2472, R2473, R2475
Lines: I2C3_SMC_TO_GG_SCL_CONN, I2C3_SMC_BI_GG_SDA_CONN
Parts: Q3200, Q3201
Sources
- iFixit - iPhone Kernel Panics (accessed 2026-09-26)
- Repair Wiki - Troubleshoot and fix iPhone random restarts using panic logs (accessed 2026-09-26)
Hinglish me
Missing sensor tg0v: Battery sensor TG0V (battery voltage).
Kahan dekhein: Battery · Battery connector
Known-good battery se test karo.
Battery connector aur aas-paas ke parts dekho.
Battery data pins diode-mode me naapo.