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DTC B2785-88: Communication between ECUs connected by LIN Bus off [11/2023 - ]: Description

The certification ECU (smart key ECU assembly) communicates with the ID code box (immobiliser code ECU) via LIN communication. If a malfunction signal is received from the ID code box (immobiliser code ECU) 3 times consecutively, this DTC is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority
B2785-88 Communication between ECUs connected by LIN Bus off The certification ECU (smart key ECU assembly) detects a communication error with an ECU connected to the certification bus lines 3 times consecutively.
  • Certification ECU (smart key ECU assembly)
  • ID code box (immobiliser code ECU)
  • Wire harness or connector
Smart Key A