Panic-full code library
I2C0, I2C1, I2C2 and I2C3 panic: what to test before replacing parts
I2C is a shared communication bus. A panic naming an I2C instance indicates that one or more devices on that bus stopped communicating or held the line in an invalid state.
First diagnostic path
- Record the bus number and every endpoint named nearby.
- Use the exact model schematic or boardview to list devices sharing that bus.
- Check SDA/SCL resistance, voltage and connector condition before replacing ICs.
Other causes to keep in scope
- One shorted peripheral pulling down the shared bus.
- Missing pull-up voltage or damaged filter.
- Open line, connector damage or a board-controller fault.
How CoreMatch uses this signature
The analyzer combines this token with the panic family, exact device model and compatible verified evidence. It ranks a likely component only when those signals agree, then provides confirmation steps.
Important limitation
A bus number never maps to one universal component across all models; isolate shared devices methodically.