DTC P1BFA-46: Internal Control Module (EEPROM Resolver Learning Value) Calibration / Parameter Memory 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 EV motor control inverter assembly monitors its internal operation and will store this DTC if it detects a malfunction of its EEPROM.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P1BFA-46 | Internal Control Module (EEPROM Resolver Learning Value) Calibration / Parameter Memory Failure | ECU internal malfunction (EEPROM error) (1 trip detection logic) |
EV motor control inverter assembly | Comes on | Master Warning: Comes on |
Rear Motor Generator | A | SAE Code: P1BFA |