DTC P0A1F-94: Hybrid/EV Battery Energy Control Module Unexpected Operation [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 (main CPU) monitors the battery ECU assembly and stores this DTC when it detects a malfunction.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P0A1F-94 | Hybrid/EV Battery Energy Control Module Unexpected Operation | The battery ECU assembly value received by the hybrid vehicle control ECU (main CPU) exceeds the threshold for a certain period of time. (1 trip detection logic) |
Battery ECU assembly | Comes on | Master Warning: Comes on |
Hybrid Control | A | SAE Code: P0A1F |