DTC P176A-87: Lost Communication with Fail Safe Signal (Gear Shift Control Module "A") Missing Message [10/2022 - ]: 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 shift control ECU (transmission floor shift assembly) sends the fail-safe signals to the ECM.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|
| P176A-87 | Lost Communication with Fail Safe Signal (Gear Shift Control Module "A") Missing Message | Fail-safe signal (SBFS) is not transmitted from shift control ECU (transmission floor shift assembly) for 2 seconds or more (1-trip detection logic). |
|
Does not come on | Transmission | A | SAE Code: P176A |