DTC U0291-00: Lost Communication with Gear Shift Control Module "B" (System 2) Missing Message [08/2023 - ]: Description
WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
The shift control ECU receives or sends a signal to and from the shift actuator ECU via CAN communication.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| U0291-00 | Lost Communication with Gear Shift Control Module "B" (System 2) Missing Message | When the ignition switch is ON (IG) and the auxiliary battery voltage is a certain value or more, a CAN communication malfunction with the shift actuator ECU is continuously detected (1 trip detection logic) |
|
Does not come on | Multi-information Display Error Message
|
Hybrid Control | B | SAE: U0291 |
- *1: for PHEV model
- *2: for THS-HEV Model