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Home >> Lexus >> 2009 >> GS 450h >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> LEXUS Link System (Diagnostic Codes & Circuit Tests) >> LEXUS Link System >> DTC 5-1: LEXUS Link Communication Error >> Description

DTC 5-1: LEXUS Link Communication Error: Description

This DTC is output when one of the following occurs: 1) the mayday ECU is malfunctioning; 2) the cowl side junction block RH (main body ECU RH) is malfunctioning; or 3) the BEAN line is open or short.

DTC No. DTC Detection Condition Trouble Area
5-1 Communication or communication line is abnormal between mayday ECU and other ECU
  • Mayday ECU
  • Light control switch circuit
  • Cowl side junction block RH (Main body ECU RH)
  • Another BEAN line ECU
  • Wire harness