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DTC B278B: CAN Control Module Stuck [11/2021 - ]: Description

DTC No. Detection Item DTC Detection Condition
B278B CAN Control Module Stuck 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 incompatible state is detected three times in a row which consist of one time at resetting + two times at microcomputer Wake-up)

Trouble symptom: 

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