DTC B2785: Communication Malfunction between ECUs Connected by LIN [09/2022 - ]: Description

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If the certification ECU (smart key ECU assembly) detects a communication error with an ECU connected to the certification bus lines for 7 seconds or more, DTC B2785 will be stored.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B2785	Communication Malfunction between ECUs Connected by LIN	Errors in LIN communication between ECUs or an open or short in communication lines. The certification ECU (smart key ECU assembly) detects a communication error with an ECU connected to the certification bus lines for 7 seconds or more.	Certification ECU (smart key ECU assembly) ID code box (immobiliser code ECU) Wire harness or connector