Get the warranty answer first — traction packs are covered far longer than the rest of the car, and this code inside the window costs you nothing. Outside it, insist on the per-block battery report and a quote that distinguishes new pack, refurbished pack and module-level repair; the difference between those is often thousands. If you are buying a used hybrid, walk away from any car with this code freshly cleared.
The battery module has concluded the pack needs replacing — the only code in the corpus whose title is an instruction to fit a part.
That bluntness deserves both respect and scrutiny. Respect, because this is P0A7F's judgment taken further: the module has watched divergence, resistance and temperature cross the thresholds beyond which management cannot compensate, and it is very rarely wrong that something in the pack is finished. Scrutiny, because a title is not a diagnosis, and the same three checks that govern P0A7F govern this code with more money at stake: the warranty (this code inside the battery warranty window is the manufacturer's bill, full stop), the per-block data (one or two collapsed modules produce this verdict, and module-level repair exists), and the history (a deep discharge after months of storage, or a run-flat fuel event, can push a recoverable pack across these thresholds on some vehicles — worth raising when the story fits, before four figures change hands).
What does not work: clearing the code and hoping. It returns, because the measurements that produced it are still being made — and a car sold on with this code cleared is the used-hybrid trap buyers are warned about. A pre-purchase battery report exists precisely to catch it.
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
P0A80 — "replace hybrid battery pack" — is the most expensively misread code in the hybrid world. It reports that the pack's blocks are drifting apart in performance, and...
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