iPhone 11 Pro — tb0v: Battery
Low confidenceVerified sourceMissing sensor
On the iPhone 11 Pro, tb0v means: Battery.
What does this code mean?
Watchdog panic: thermalmonitord no longer receives readings from the TB0V sensor, which iPad Rehab lists among the battery sensors; with no news from it for ~3 minutes, iOS restarts the iPhone, in a loop as long as the sensor stays missing.
Which part to test first?
Check whether the battery percentage is displayed (a reading stuck at 0–1% reveals lost battery data), inspect the battery connector (bent pins), test with a known-good battery, then measure the connector's data lines in diode mode.
The same code on other models
- iPhone SE (2nd generation)Battery
- iPhone 12 Pro MaxBattery
- iPhone 12 ProBattery
- iPhone 12 miniBattery
- iPhone 12Battery
- iPhone 11 Pro MaxBattery
- iPhone 11Battery
- iPhone XS MaxBattery
- iPhone XSBattery
- iPhone XRBattery
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