High-voltage isolation: module fault, software distinction and escalation. Compare manufacturer documents and vehicle gates before choosing any diagnostic or repair branch.
This comparison is an editorial cross-reference of separate manufacturer documents. It does not choose a repair, prove VIN eligibility or give driving permission. Check current sources and safety conditions first.
This reference supports the stated topic only. Model, model year, equipment, current rule or individual vehicle conditions may differ; check the original source before acting.
Read the Nissan original: LEAF no start P31E7 and P0AA6 Source date: 2024-05-10; research checked: 2026-11-01.
Why these cases are different
Do not transfer a LEAF module repair, Pacifica BPCM distinction or GM TAC protocol across OEMs merely because P0AA6 appears.
A shared root code, similar warning or common symptom is only a search starting point. The year, engine, production window, associated codes and measured test can lead to a different manufacturer branch.
Compare the original document contexts
| Scenario | Manufacturer document | Recorded scope sample |
|---|---|---|
| Nissan LEAF P31E7 with P0AA6: battery-module isolation diagnosis | NTB23-024A | Nissan LEAF · 2019, 2020, 2021, 2022, 2023, 2024, 2025 · BEV |
| GM Ultium isolation and thermal-priority codes: specialist escalation before parts | 23-NA-151 | BrightDrop Zevo 600 · 2022, 2023, 2024 · BEV; BrightDrop Zevo 400 · 2024 · BEV; Cadillac LYRIQ · 2023, 2024 · BEV |
| 2017 Pacifica Hybrid isolation/no-restart: BPCM software distinction | 08-043-17 Rev B | Chrysler Pacifica Hybrid · 2017 · 3.6L V6 hybrid EH3; PHEV; E flite SI-EVT DFQ; 2017-07-19 |
The scope column is a sample of the supplied rows, not every condition in the original communication. Open each case and its source for the full exclusions.
What to bring to a qualified shop
- The exact code with suffix, module, status and any companion codes; do not clear them before recording.
- The full vehicle year, engine or EV powertrain, build/VIN information and warning text.
- The symptoms and circumstances in which they appeared, including any unsafe behavior.
- The document numbers above and a request to check current revisions, eligibility and diagnostic evidence.
What remains unknown here
The research set does not contain a current VIN-level service approval or a technician’s diagnosis of your car. These comparisons do not establish a failed component, warranty payment, recall remedy or compatible product. For high-voltage, braking, steering, smoke, fuel or severe power loss, seek help rather than using a comparison to justify driving or a DIY repair.
Sources and scope
- Nissan — LEAF no start P31E7 and P0AA6 (NTB23-024A) Document: 2024-05-10 · Research checked: 2026-11-01
- General Motors — EV battery isolation and coolant-loss data collection (23-NA-151) Document: date not recorded · Research checked: 2026-11-01
- FCA US — Pacifica BPCM flash and false isolation indication (08-043-17 Rev B) Document: date not recorded · Research checked: 2026-11-01
Research snapshot: 2026-11-01. Source documents may have newer revisions. Verify current instructions and VIN eligibility with the manufacturer.