DTC B278B: Can Control Module Stuck

DTC detecting condition  :

When incompatible state is detected two times in a row in every Wake-up of microcomputer, after detecting incompatible state between written data and read-out data to/from register for CAN check after resetting.

(When the data do not match for three consecutive times (one time at resetting + two times at microcomputer Wake-up).)

Trouble symptom  :

The operation is performed with information of the last value as right, but basically the system operation is deactivated.