DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Lighting System (W/ AFS) - Diagnostic Codes (1 Of 2) >> LIGHTING SYSTEM (w/ AFS) >> DTC B2456: Left Headlight ECU Variation Error [12/2019 - 10/2022] >> Description

DTC B2456: Left Headlight ECU Variation Error [12/2019 - 10/2022]: Description

This DTC is stored if the headlight ECU sub-assembly LH for another destination is installed.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
B2456 Left Headlight ECU Variation Error Detection condition: 
  1. The ignition switch is ON.

Malfunction status: 

  1. Vehicle specification information received via CAN communication is continuously mismatched

Malfunction duration: 

  1. -
  • Hybrid vehicle control ECU*1
  • ECM*2
  • Main body ECU (multiplex network body ECU)
  • Headlight ECU sub-assembly LH
 AFS
  1. *1: for HV Model
  2. *2: for Gasoline Model
Diesel-Data.com