DTC P161A: Lost Communication with Alternator [11/2021 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.
The ECM communicates with the generator assembly via LIN communication. If a LIN communication error is detected, the ECM stores this DTC and illuminates the charging warning light.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Memory |
|---|---|---|---|---|---|
| P161A | Lost Communication with Alternator | Generator assembly or ECM communication stop for about 17 minutes or more with the engine switch on (IG). (1 trip detection logic) |
|
Charging warning light does not come on | DTC stored |