DTC P0A7F-123: Hybrid Battery Pack Deterioration: Description
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- The battery smart unit and hybrid vehicle control ECU calculate the SOC (state of charge) of the HV battery based on the accumulated amperage in the HV battery. The battery smart unit sends a signal indicating the condition of the HV battery to the hybrid vehicle control ECU. The hybrid vehicle control ECU then calculates the SOC based on this information and controls HV battery charge and discharge according to the driving conditions.
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DTC No. DTC Detection Condition Trouble Area P0A7F-123 - Internal resistance of HV battery is higher than the standard (1 trip detection)
- Difference in the capacity between battery blocks is larger than the standard (2 trip detection)
- HV battery
- Battery smart unit
HINT:
P0A7F cannot be set unless the vehicle is driven for approximately 10 minutes after clearing the DTCs. (For 2 trip detection, turn the power switch off and perform a road test again after the first road test.)