DTC P31B5-49: Hybrid/EV Battery Internal Electronic Failure [03/2023 - ]: Description
The battery ECU assembly monitors its internal operation and will store a DTC when it detects an internal malfunction.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P31B5-49 | Hybrid/EV Battery Internal Electronic Failure | An abnormal signal is detected by the battery ECU assembly (excessive discharging current). (1 trip detection logic) |
Hybrid vehicle control ECU | Does not come on | Master Warning: Comes on |
HV Battery | A | SAE Code: P31B5 |