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DTC U0073-86: Control Module Communication Bus OFF [10/2014 - 05/2019]: Description

The 4WD ECU assembly outputs a DTC when transmission of the signal from the 4WD ECU assembly is not completed.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0073/86 Control Module Communication Bus OFF
  1. When the following continues for 5 seconds or more:
    • Signals from the 4WD ECU assembly are not received.
  2. When the following occurs 10 times consecutively:
    • A communication malfunction (bus off) occurs one or more times within 0.1 seconds.
  • CAN communication system
  • 4WD ECU assembly
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