Code No. U1073: Bus-off


caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
  • If diagnosis code U1073 is set in ABS-ECU, always diagnose the CAN bus line. If there is any fault in the CAN bus lines, an incorrect diagnosis code may be set. In this case, the set diagnosis code is not highly reliable.
  • Whenever ECU is replaced, ensure that the CAN bus lines are normal.

DIAGNOSIS CODE SET CONDITIONS


This diagnosis code is set when ABS-ECU has ceased the CAN communication (bus off).

PROBABLE CAUSES