DTC U0100-00: Lost Communication With ECM/PCM "A"; DTC U0293-00: Lost Communication with Hybrid/EV Powertrain Control Module [12/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
The rear motor generator control ECU (MGR ECU) communicates with the ECM and hybrid vehicle control ECU assembly via CAN communication.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| U0100-00 | Lost Communication With ECM/PCM "A" | A CAN communication error between the ECM and rear motor generator control ECU (MGR ECU) (CAN communication system malfunction) occurs (1 trip detection logic) |
CAN communication system | Comes on | Master Warning: Comes on |
Rear Motor Generator | B | SAE Code: U0100 |
| U0293-00 | Lost Communication with Hybrid/EV Powertrain Control Module | A CAN communication error between the hybrid vehicle control ECU assembly and rear motor generator control ECU (MGR ECU) (CAN communication system malfunction) occurs (1 trip detection logic) |
CAN communication system | Comes on | Master Warning: Comes on |
Rear Motor Generator | B | SAE Code: U0293 |