Missing sensor TG0B: Battery temperature sensor

Missing sensor TG0B means the battery temperature sensor is not sending data to the thermalmonitord process. After about 180 seconds without that data, the iPhone restarts on its own and writes a Panic-Full log containing the line Missing sensor(s): TG0B. Usual location: Battery / battery data line. It is one of the easiest errors to trace because the log names the sensor directly. Scan the log with the Panic Scan app to see every missing sensor at once.

Basic information

Code

TG0B

Missing sensor

Battery temperature sensor

Location

Battery / battery data line

On iPhone 11 Pro, iPhone 11 Pro Max

Charge port flex (11 Pro / 11 Pro Max route the battery data line through the charge flex)

Confidence

Very likely

Related parts

• Battery
• Battery connector on the logic board
• Charging circuit on the logic board

Notes

Low-quality batteries or batteries without a chip often cause this.

Errors in the same category

• Sensor / flex cableAOP NMI POWERPower button flex / front camera assemblyHigh
• Sensor / flex cableAOP PANICAlways-on processor (AOP) and sensorsHigh
• Sensor / flex cableProximity / ambient light sensorFront sensor assemblyMedium
• Sensor / flex cableGyro / accelerometer / compassMotion sensors on the logic boardMedium
• mic1Missing sensor mic1Bottom microphone
• mic2Missing sensor mic2Rear / top microphone
• mic3Missing sensor mic3Front microphone (near the earpiece)
• prs0Missing sensor prs0Pressure sensor (barometer)