DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message [09/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
The motor generator control ECU (MG ECU) communicates with the hybrid vehicle control ECU and ECM via CAN communication.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| U0100-87 | Lost Communication With ECM/PCM "A" Missing Message | A CAN communication error between the ECM and motor generator control ECU (MG ECU) (CAN communication system malfunction) occurs (1 trip detection logic) |
CAN communication system | Comes on | Master Warning: Comes on |
Motor Generator | B | SAE Code: U0100 |
| U0293-87 | Lost Communication with Hybrid/EV Powertrain Control Module Missing Message | A CAN communication error between the hybrid vehicle control ECU and motor generator control ECU (MG ECU) (CAN communication system malfunction) occurs (1 trip detection logic) |
CAN communication system | Comes on | Master Warning: Comes on |
Motor Generator | B | SAE Code: U0293 |