DTC P0A1B-1F: Generator Control Module Circuit Intermittent [04/2018 - 08/2020]: Description
WARNING: This page is about a different car, the 2020 Toyota Avalon and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
If the motor generator control ECU, which is built into in the inverter with converter assembly, is reset due to a problem with the power source in the inverter, the motor generator control ECU will store this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P0A1B-1F | Generator Control Module Circuit Intermittent | Error in reset signal from the inverter assembly power source IC: If internal power source voltage drops below the normal CPU operating voltage or the ROM/RAM is malfunctioning, the power source IC resets the MG ECU and stores this DTC. (1 trip detection logic) |
|
Comes on | Master Warning Light: Comes on |