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DTC U0073/94 Control Module Communication Bus OFF: Description

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE

DTC No. DTC Detecting Conditions Trouble Areas
U0073/94 When either of following conditions detected:
  1. After data output from skid control ECU completed, output continues for 5 seconds or more.
  2. Bus off condition occurs once or more per 0.1 second 10 times in succession.
 CAN communication system
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