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DTC B279A: Theft Deterrent System Communication Line High Fixation (FROM 12/2010): Description

WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

If the communication line (EFIO - IMI) to the ID code box is stuck on HI output, the ECM stores this DTC.

DTC Code DTC Detection Condition Trouble Area
B279A When communication line (EFIO - IMI) between ECM and ID code box is stuck on HI output.
  • Wire harness
  • ID code box
  • ECM