The CAN node that went bus-off only on cold mornings
This was some years ago but I still think about it every winter. We had a body control module, nothing special, talking on CAN at 500 kbit/s with the other modules. On the test bench everything perfect. In the field, some customers report that the module "die" in the morning and come back after the car is driving some minutes. Only in the north. Only in winter. First we suspect the power supply, because cold…