DTC U0291-87: Lost Communication with Gear Shift Control Module "B" Missing Message [08/2023 - ]: Description
WARNING: This page is about a different car, the 2025 Lexus RX 450h+ and 2024 Lexus RX 450h+. However, it is still accessible from the selected car via links, so may be relevant.
The hybrid vehicle control ECU transmits and receives signals via CAN communication to and from the shift actuator ECU.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| U0291-87 | Lost Communication with Gear Shift Control Module "B" Missing Message | A CAN communication error between the hybrid vehicle control ECU and shift actuator ECU (CAN communication system malfunction) occurs The hybrid vehicle control ECU cannot receive signals from the shift actuator ECU (1 trip detection logic) |
|
Does not come on | Master Warning: Does not come on |
Hybrid Control | B | SAE Code: U0291 |