DTC U0120-87: Lost Communication with Starter / Generator Control Module Missing Message [10/2023 - ]: Description
WARNING: This page is about a different car, the 2025 Toyota RAV4, 2024 Toyota RAV4, 2023 Toyota RAV4, 2022 Toyota RAV4, and 2021 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
The ECM and engine stop and start ECU send and receive signals via CAN communication.
If a communication error occurs between the ECM and engine stop and start ECU, the ECM stores this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Note |
|---|---|---|---|---|---|
| U0120-87 | Lost Communication with Starter / Generator Control Module Missing Message | There is no communication between the ECM and engine stop and start ECU (1 trip detection logic). |
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Comes on |
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