DTC B242C: Right Headlight ECU Malfunction; DTC B242D: Left Headlight ECU Malfunction [06/2018 - 09/2022]: Description
WARNING: This page is about a different car, the 2022 Toyota Corolla, 2021 Toyota Corolla, 2020 Toyota Corolla, and 2019 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
The headlight ECU sub-assembly LH or headlight ECU sub-assembly RH stores a DTC if it detects an internal malfunction.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| B242C | Right Headlight ECU Malfunction | Detection condition:
Malfunction status:
Malfunction duration:
|
Headlight ECU sub-assembly RH | AFS (Sub) |
| B242D | Left Headlight ECU Malfunction | Detection condition:
Malfunction status:
Malfunction duration:
|
Headlight ECU sub-assembly LH | AFS |