DTC P0A1C-47: Drive Motor "B" Control Module Watchdog / Safety MCU Failure [12/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
The rear motor generator control ECU (MGR ECU) monitors its internal operation and will store this DTC when it detects an internal malfunction. If these DTCs are output, replace the EV motor control inverter assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P0A1C-47 | Drive Motor "B" Control Module Watchdog / Safety MCU Failure | Rear motor generator control ECU (MGR ECU) internal malfunction (1 trip detection logic) |
EV motor control inverter assembly | Comes on | Master Warning: Comes on |
Rear Motor Generator | A | SAE Code: P0A1C |