DTC P18AF-12: Gear Shift Control Module "B" EPBT Circuit Short to Battery [11/2021 - ]: Description
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
If the shift status cannot be changed from P to N due to a vehicle malfunction, towing using a tow truck, etc., is not possible.
Using a P position release tool, the shift actuator ECU sends an activation trigger (EPBT signal) to the shift actuator ECU to enable a shift state change from P to N. (for P position release tool compatible vehicles)
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P18AF-12 | Gear Shift Control Module "B" EPBT Circuit Short to Battery | When the BAT1 voltage is a certain value or more and the shift actuator ECU is operating, a certain voltage is detected at the EPBT terminal. (1 trip detection logic) |
Shift control actuator assembly (Shift actuator ECU) | Does not come on | Multi-information Display Error Message
|
Hybrid Control | A | SAE: P18B1 |