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Home >> Lexus >> 2021 >> LS 500 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio / Video System - Diagnostic Codes (2 Of 3) >> Audio And Visual System >> DTC B15D0: MOST Communication Malfunction [12/2017 - 10/2022] >> Description

DTC B15D0: MOST Communication Malfunction [12/2017 - 10/2022]: Description

Navigation system components communicate with each other via MOST communication.

If a line short or short to ground occurs in a MOST communication line, communication will not be possible and the navigation system will not operate normally.

After the engine switch is turned on (ACC), if the MOST communication network cannot be established and MOST communication is determined to not be possible, this DTC will be stored.

HINT: 

Electrical noise may cause communication malfunctions between devices in the MOST network.

W/O REAR SEAT ENTERTAINMENT SYSTEM

DTC No. Detection Item DTC Detection Condition Trouble Area
B15D0 MOST Communication Malfunction MOST network cannot be established.
  • Stereo component amplifier assembly
  • Radio receiver assembly
  • Harness or connector
W/ REAR SEAT ENTERTAINMENT SYSTEM

DTC No. Detection Item DTC Detection Condition Trouble Area
B15D0 MOST Communication Malfunction MOST network cannot be established.
  • Stereo component amplifier assembly
  • Multi-media display controller sub-assembly
  • Radio receiver assembly
  • Harness or connector