DTC B2451: Variation Code not Written [12/2018 - ]: Procedure

WARNING: This page is about a different car, the 2022 Toyota Prius, 2021 Toyota Prius, 2020 Toyota Prius, and 2019 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

SYNCHRONIZE VEHICLE INFORMATION

Synchronize the vehicle information.

Refer to INITIALIZATION [12/2018 - 06/2021] , or refer to INITIALIZATION [06/2021 - ]

Result

Proceed to
NEXT

Result:

See step 2

CLEAR DTC

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / AFS / Trouble Codes.

Clear the DTCs.

Body Electrical > AFS > Clear DTCs

Result

Proceed to
NEXT

Result:

See step 3

CHECK FOR DTC

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / AFS / Trouble Codes.

Check for DTCs.

Body Electrical > AFS > Trouble Codes

DTC B2451 is not output.

HINT:

If the No. 1 headlight ECU sub-assembly LH stores DTC B2451 even though initialization has been performed, the No. 1 headlight ECU sub-assembly LH may be malfunctioning.

Result

Proceed to
OK
NG

Result:

END (VEHICLE SPECIFICATIONS WERE NOT STORED)

Result:

REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to REMOVAL [12/2018 - ]