Monitor Description
WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
The engine control unit and the transmission control unit are located inside the ECM. The engine control unit intercommunicates with the transmission control via CAN communication.
If there is a problem in this communication, the ECM store this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|
| U0101-87 | Lost Communication with TCM Missing Message | All of the following conditions are met for 1.25 seconds or more (1 trip detection logic):
|
ECM | Comes on | Engine | B |
|