Toyota P0A80 Code – Hybrid Battery Deterioration
Limited
Safe to drive :
Toyota and Lexus hybrid vehicles only
Applies only to :
Not applicable to :
This explanation does NOT apply to non-hybrid vehicles or other manufacturers.
High
Severity level :
When Does This Code Appear on the Vehicles
Toyota P0A80 appears on hybrid vehicles when the master warning light and hybrid system warning are displayed.
What This Code means on the Vehicles
On Toyota and Lexus hybrids, P0A80 indicates deterioration of the hybrid battery pack beyond acceptable limits.
Why This is different from a generic OBD2 Code
Generic OBD-II descriptions are vague, but Toyota specifically uses P0A80 to indicate battery capacity imbalance, not inverter failure.
Common Situations That Trigger This Code
Aging hybrid battery modules; Voltage imbalance between battery blocks; High mileage hybrids.
What Will NOT Fix This Code
Replacing inverter; Replacing 12V battery; Clearing code without battery testing.
How to Clear This Code on Vehicles
Perform hybrid battery block voltage test and replace weak modules or battery pack as required.
Related Manufacturer Specific Codes
Toyota P3011; Toyota P0A7F