DTC P0ABF-123: Hybrid Battery Pack Current Sensor Circuit; DTC P0AC1-123: Hybrid Battery Pack Current Sensor Circuit Low; DTC P0AC2-123: Hybrid Battery Pack Current Sensor Circuit High [08/2013 - ]: Description
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- The battery current sensor, which is mounted on the positive cable side of the HV battery, detects the amperage that flows into the HV battery. The battery smart unit receives a voltage, which varies between 0 and 5 V in proportion to the amperage, at its IB terminal from the battery current sensor. An output voltage of the battery current sensor below 2.5 V indicates that the HV battery is being charged, and above 2.5 V indicates that the HV battery is being discharged. The power management control ECU determines the charging and discharging amperage of the HV battery based on the signals that are input to its IB terminal from the battery smart unit, and calculates the SOC (state of charge) of the HV battery through the accumulated amperage.
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P0ABF P0AC1 P0AC2 |
123 | When the battery current sensor is abnormal (1 trip detection) |
|