DTC P0A1B-49: Drive Motor "A" Control Module Internal Electronic Failure [11/2023 - ]: Description
WARNING: This page is about a different car, the 2025 Toyota Highlander and 2024 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
The motor generator control ECU (MG ECU), which is built into the inverter with converter assembly, monitors its internal operation and will store DTCs if the system is malfunctioning.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P0A1B-49 | Drive Motor "A" Control Module Internal Electronic Failure | MG ECU internal malfunction: Calculation check error (1 trip detection logic) |
Inverter with converter assembly | Comes on | Master Warning: Comes on |