iPhone SE (1st generation) — tg0b: Battery data line: resistor near the battery connector
Medium confidenceVerified sourceMissing sensor
On the iPhone SE (1st generation), tg0b means: Battery data line: resistor near the battery connector (logic board) or battery.
What does this code mean?
Watchdog panic: thermalmonitord no longer receives data from the TG0B battery sensor; with no response for ~3 minutes, iOS restarts the iPhone. On iPhone SE (1st gen.), two iFixit threads point, after a battery replacement, to a small component torn off or shifted next to the battery connector, on the data line.
Which part to test first?
Inspect the battery data line resistor, right next to the battery connector, under the microscope; if it is missing, replace it or bridge the two pads (data line only, according to Chris Stables).
The same code on other models
- iPhone SE (2nd generation)Battery
- iPhone 12 Pro MaxBattery
- iPhone 12 ProBattery
- iPhone 12 miniBattery
- iPhone 12Battery
- iPhone 11Battery
- iPhone XS MaxBattery
- iPhone XSBattery
- iPhone XRBattery
- iPhone 11 Pro MaxBattery or charging port flex
- iPhone 11 ProBattery or charging port flex
- iPhone 7 PlusBattery
- iPhone 7Battery
- iPhone 8 PlusBattery
- iPhone 8Battery
- iPhone XBattery
Field cases
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