P0A80
Replace Hybrid Battery Pack
The hybrid battery management system has determined that the battery pack must be replaced. Often set after persistent cell imbalance, capacity loss or repeated thermal events.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: shop_only
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Common causes
Ordered by how often each turns out to be the cause.
- Battery pack replacement requiredCommon
- Persistent cell imbalancePossible
Parts involved
- Hv Battery
- Battery Energy Control Module
P0A80 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.