P31E7 on Nissan vehicles
P31E7 is named on 9 Nissan model years (2017–2025): 11 manufacturer filings and 3 owner reports in NHTSA’s files, across Leaf.
Which Nissan model years name P31E7
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2022 Nissan Leaf | Electrical System | 2 | 1 |
| 2021 Nissan Leaf | Electrical System | 2 | — |
| 2020 Nissan Leaf | Electrical System | 2 | — |
| 2019 Nissan Leaf | Electrical System | 2 | — |
| 2025 Nissan Leaf | Electrical System | 1 | — |
| 2024 Nissan Leaf | Electrical System | 1 | — |
| 2023 Nissan Leaf | Electrical System | 1 | — |
| 2018 Nissan Leaf | Electrical System | — | 1 |
| 2017 Nissan Leaf | Engine | — | 1 |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
What Nissan owners said
Source: NHTSA complaint databaseOwners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.
The manufacturer-installed 40kWh replacement battery has suffered an internal high-voltage isolation short to the vehicle chassis (Codes P0AA6/P31E7), creating an immediate fire and shock hazard
Nissan filings that name P31E7
Source: NHTSA manufacturer communicationsBulletins and campaigns Nissan filed with NHTSA whose summary names P31E7. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- NTB23-024 Service bulletin2023-03-14 · Electrical System
- VEHICLE WILL NOT START AND DTCS P31E7 AND P0AA6 STORED IN EV/HEV CONTROL MODULE IF YOU CONFIRM The vehicle does not start, AND DTCs P31E7 (RESTART INHIBITION) and P0AA6 (HV BATTERY VOLTAGE SYSTEM ISOLATION) are stored in the EV/HEV Control Module. ACTION Follow the SERVICE PROCEDURE in this bulletin to: 1. Perform ESM diagnosis for DTCs P31E7 or P0AA6 to determine if a Li-Ion battery m
- NTB23-024A Service bulletin2024-05-11 · Electrical System
- VEHICLE WILL NOT START AND DTCS P31E7 AND P0AA6 STORED IN EV/HEV CONTROL MODULE This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
What P31E7 means
Source: SAE J2012 / OBD-IIP31E7 is a manufacturer-specific code: the second character is a 3, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
A stored code names the test that failed, never the part that caused it. The record above is what Nissan and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs P31E7 a known problem on Nissan vehicles?
It is a documented one: NHTSA's files hold 11 manufacturer filings and 3 owner reports naming P31E7 on 9 Nissan model years (2017–2025). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Nissan models does P31E7 appear on most?
2022 Leaf (3 documents), 2021 Leaf (2 documents), 2020 Leaf (2 documents).
Does P31E7 on a Nissan mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.