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DTC B2405 Sub Bus LIN Module Communication Malfunction: Description

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

This DTC is output when LIN communication between the luggage room junction block (rear junction block ECU) and map light assembly stops for 10 seconds or more

DTC DETECTION CONDITION CHART

DTC Code DTC Detection Condition Trouble Area
B2405 No communication between luggage room junction block (rear junction block ECU) and map light assembly for 10 seconds or more
  • Map light assembly
  • Luggage room junction block (rear junction block ECU)
  • Harness or connector