DTC P3123-87: Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module Missing Message [10/2022 - ]: Description
WARNING: This page is about a different car, the 2025 Lexus RX 350h, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
Refer to the description for P0D2D-16.
Refer to DESCRIPTION
The MG ECU, which is built into in the hybrid motor control inverter assembly, controls motor (MG2) based on commands from the hybrid vehicle control ECU.
The hybrid vehicle control ECU monitors communication data and detects malfunctions.
A communication error between the MG ECU and the hybrid vehicle control ECU.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P3123-87 | Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module Missing Message | Error in reception from hybrid motor control inverter assembly (MG ECU) via serial communication (out of communication standard) (1 trip detection logic) |
|
Comes on | Master Warning: Comes on |
Hybrid Control | A | SAE Code: P3123 |