P0A80 on Toyota Vehicles: Replace Hybrid Battery Pack
The hybrid system sees weak or unbalanced modules in the high-voltage battery and flags the pack for service. P0A80 →
5Complaints mentioning the code
#1Rank among 2 brands
0.5%Share of Toyota DTC complaints
In NHTSA owner complaints we analyzed for Toyota, P0A80 was mentioned 5 times.
Notes by brand
P0A80 is one of the most common high-mileage codes on 2nd- and 3rd-generation Prius and other Toyota NiMH hybrids, and Toyota stores a sub-code that tells a technician which battery block is weakest. Check whether your pack is still under the hybrid battery warranty: coverage is 8 years/100,000 miles federally and longer in California-emission states and on newer model years.
Most mentioned models
| Toyota Camry Hybrid | 3 | |
|---|---|---|
| Toyota Prius | 1 | |
| Toyota Prius Plug-In | 1 |
Model years mentioned
Components named in these complaints
- Fuel/propulsion System (2)
- Electrical System (2)
- Unknown Or Other (2)
- Power Train (1)
- Service Brakes (1)
Possible causes
- Aged NiMH modules that have lost capacity and drifted out of balance
- Clogged battery cooling intake or failing cooling fan causing overheating
- Corroded bus bars or voltage-sensing connections inside the pack
- Car left unused for long periods, letting modules self-discharge unevenly
Related codes
Source: NHTSA Complaints API (US government open data), analyzed by DTC mention.