DTC B2456: Left Headlight ECU Variation Error [11/2018 - 12/2021]: Description

WARNING: This page is about a different car, the 2021 Toyota RAV4, 2020 Toyota RAV4, and 2019 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

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	Note
B2456	Left Headlight ECU Variation Error	Detection condition: The ignition switch is ON Malfunction status: Vehicle specification information received via CAN communication is continuously mismatched Malfunction duration: -	Hybrid vehicle control ECU assembly (for HV Model) ECM (for Gasoline Model) Main body ECU (multiplex network body ECU) Headlight ECU sub-assembly LH	HL AutoLeveling	-

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Note

B2456

Left Headlight ECU Variation Error

Detection condition:

The ignition switch is ON

Malfunction status:

Vehicle specification information received via CAN communication is continuously mismatched

Malfunction duration:

Hybrid vehicle control ECU assembly (for HV Model)
ECM (for Gasoline Model)
Main body ECU (multiplex network body ECU)
Headlight ECU sub-assembly LH

HL AutoLeveling