DTC P31B4-00: Extreme Hybrid/EV Battery Charging Current [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 battery ECU assembly monitors its internal operation. If it detects the following malfunction, it will store this DTC and perform fail-safe control.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P31B4-00 | Extreme Hybrid/EV Battery Charging Current | An abnormal signal is detected by the battery ECU assembly (excessive charging current). (1 trip detection logic) |
Hybrid vehicle control ECU assembly | Does not come on | Master Warning: Comes on |
HV Battery | A | SAE Code: P31B4 |