Powertrain
generic / SAE
P0A7A
Hybrid Battery Pack Deterioration
The battery management system detects that the high-voltage battery pack capacity has fallen below acceptable threshold based on charge/discharge tests and impedance measurement.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberA / 7A
Possible causes
- Battery aged or damaged cells high
- Persistent cell imbalance medium
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Inspection / repair
- Difficulty: shop only
- DIY: shop recommended
- Estimated cost: 2000–12000 €
- Estimated time: 4–16 h
- Component: hv battery
- Component: bms
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012