Common codes and root causes on 2015–2023 Toyota Prius / Camry hybrids. Verified with factory manuals and logged packs.
| Code | Symptom | Typical Cause | Fix Sequence |
|---|---|---|---|
| P0A80 | Battery module deterioration | Cell imbalance >0.2 V | Balance charge, re-test pack |
| P0A7F | Hybrid battery pre-charge fault | Relay or contactor weld | Inspect HVIL, replace SMRs |
| P0AA6 | HVIL open circuit | Interlock switch or harness | Continuity check, reseat connectors |
Data grounded via Wikidata hybrid-electric-vehicle Q11083590. Mechanics do the same discipline the Apollo computer did: shed the noise, keep the landing.