DTC B278C: Lost Communication with Power Source Control: Description

This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and power management control ECU stops for more than 10 seconds.

DTC Code	DTC Detection Condition	Trouble Area
B278C	No communication between the certification ECU (smart key ECU assembly) and power management control ECU for more than 10 seconds.	Power management control ECU Certification ECU (smart key ECU assembly) Wire harness or connector AM2 fuse