DTC U0242: Lost Communication With Headlamp Control Module "B" [09/2020 - ]: Description
WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2024 Lexus IS 500, 2024 Lexus IS 350, 2024 Lexus IS 300, 2023 Lexus IS 500, and 2023 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
The headlight ECU sub-assembly LH communicates with the headlight ECU sub-assembly RH via LIN communication. If communication between the headlight ECU sub-assembly LH and headlight ECU sub-assembly RH stops, the headlight ECU sub-assembly LH will store this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| U0242 | Lost Communication With Headlamp Control Module "B" | Detection condition:
Malfunction status:
Malfunction duration:
|
|
HL AutoLeveling |