While P0A80 tells you the pack as a whole has failed, the P3011 through P3024 codes tell you exactly which part of the pack is causing the problem. These codes are among the most diagnostically useful hybrid codes available — and understanding what they're pointing at helps explain why module-level quality control matters so much in a reconditioned battery.

Code P0AA6 is one of the more misunderstood hybrid codes because it doesn't always mean what people assume. Unlike P0A80 or P0A7F — which are clearly about battery pack performance — P0AA6 is about electrical isolation, and the source of the problem can be the battery, the wiring, the voltage sensing harness, or another component in the high-voltage system.

P0A80 is a Toyota/Lexus hybrid-specific diagnostic trouble code that means the HV (high-voltage) battery control module has determined the battery pack is no longer performing within acceptable parameters.

When your Prius or Camry Hybrid hits the 10–15 year mark and a battery warning light comes on, it's natural to wonder: is this worth fixing, or should I just move on? It's a fair question — and the answer is more often "fix it" than most people expect.

Check Hybrid System Message: This message is Generic and will display if anything is going wrong that causes the hybrid system to shut down.

Reconditioned Vs New Vs OEM Hybrid Battery What’s the Difference?

What to Do when your Check Hybrid System Light Comes On