DTC B2430: LED Headlight LH Circuit Malfunction; DTC B2431: LED Headlight RH Circuit Malfunction [08/2017 - 08/2019]: Description

The illumination of the low beam headlights is controlled by the main body ECU (multiplex network body ECU). When the headlights are turned on, the main body ECU (multiplex network body ECU) receives a signal from the headlight assembly and detects the illumination condition of the low beam headlights.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B2430	LED Headlight LH Circuit Malfunction	LED headlight LH circuit malfunction	Headlight assembly LH Main body ECU (multiplex network body ECU) Cowl side junction block LH Harness or connector
B2431	LED Headlight RH Circuit Malfunction	LED headlight RH circuit malfunction	Headlight assembly RH Main body ECU (multiplex network body ECU) Cowl side junction block LH Harness or connector

HINT:

DTC B2430 and B2431 are not output if 20 seconds have not elapsed since the ignition switch was turned on.