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DTC U1073: Bus-Off
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC may be stored. Prior to this diagnosis, diagnose the CAN bus lines.
  • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
 
 
DTC SET CONDITION
This DTC is stored when the abnormality below is detected:
  • CAN C-bus off interruption is detected.
 
 
PROBABLE CAUSES
  • The CAN bus line is defective.
  • ECU malfunction of other system
  • Malfunction of AWC-ECU
    noteCheck the following contents, before replace the AWC-ECU.
    • Check scan tool (M.U.T.-III) to diagnose the CAN bus lines.
    • Check whether the diagnosis trouble code No.U1073 is stored again.