P0AA6
2 owner reports and 54 manufacturer filings across 18 model years from Cadillac, Chrysler, Ford, Hyundai and others.
Where P0AA6 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2025 Mazda CX-70 | Engine | 12 | — | |
| 2024 Mazda CX-90 | Engine | 12 | — | |
| 2025 Mazda CX-90 | Engine | 8 | — | |
| 2017 Chrysler Pacifica | Electrical System | 5 | — | Battery → |
| 2016 Cadillac ELR | Power Train | 2 | — | |
| 2022 Nissan Leaf | Electrical System | 2 | — | Battery → |
| 2021 Nissan Leaf | Electrical System | 2 | — | Battery → |
| 2020 Nissan Leaf | Electrical System | 2 | — | Battery → |
| 2019 Nissan Leaf | Electrical System | 2 | — | Battery → |
| 2018 Ford C-MAX | Electrical System | 1 | — | Battery → |
| 2017 Ford C-MAX | Electrical System | 1 | — | Battery → |
| 2022 Ford E-Transit | Electrical System | 1 | — | Battery → |
| 2021 Hyundai Ioniq | Electrical System | — | 1 | Battery → |
| 2017 Hyundai Ioniq | Engine | 1 | — | |
| 2025 Nissan Leaf | Electrical System | 1 | — | Battery → |
| 2024 Nissan Leaf | Electrical System | 1 | — | Battery → |
| 2023 Nissan Leaf | Electrical System | 1 | — | Battery → |
| 2017 Nissan Leaf | Engine | — | 1 |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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P0AA6 by make
The same record, one make at a time: the model years, bulletins and owner reports that name P0AA6 on that maker’s vehicles.
What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
Vehicle safety hazard: active high-voltage isolation fault (dtc P0AA6) with deceptive dealer/manufacturer bypass & concealment
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
54 manufacturer filings name P0AA6. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P0AA6.
- TSB 26-2167 Service bulletin2026-04-14 · Electrical System
- This article supersedes TSB 25-2385. Reason for update: update the TSB Issue indicating the modules where are stored the DTCs P1A10 and P0AA6. Some of the vehicles listed in the Model statement above exhibit at least one of the following conditions: Illuminated malfunction indicator lamp (MIL) and/or illuminated powertrain malfunction (wrench) indicator with DTCs P0711, P0A2B, P0A2D, P0A2C, P071
- SA-018-25 Service bulletin2025-03-25 · Electrical System
- Important Note: This Service alert is intended as an early notification for upcoming software releases. Please refer to the latest dealer communications and MGSS for updated information. CX-90 MHEV Battery: Mazda is currently experiencing many backorders on MHEV Batteries (K6Y8-67-ZBXD). The issue causing most of the concerns is a cell imbalance inside the MHEV battery, which sets DTC P0DAB. The r
- 7325C Dealer Letter Emissions2025-03-20 · Engine
- 7325C - EMISSION RECALL - 2024-2025 CX-90 AND 2025 CX-70 PHEV ONLY - HYBRID SYSTEM WARNING LIGHT MAY TURN ON. Mazda Motor Corporation has decided to conduct an Emission Recall on certain 2024-2025 CX-90 and 2025 CX-70 PHEV vehicles. Please see the description, model, year, and VIN range below for all vehicles in this campaign. There are 38,812 vehicles affected by this concern in the U.S. and U.S.
- 07-006-24 Service bulletin2024-11-23 · Unknown Or Other
- Some customers may complain that the heater does not work properly and that a warning about a hybrid abnormality appears on the Instrument Cluster. Upon inspection, the vehicle may have DTC P0AA6:00 (High voltage insulation malfunction: Decrease in vehicle insulation resistance) stored in memory. This may be caused by an internal meltdown of the water heater. To eliminate this concern, the water h
- 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.
- 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
What P0AA6 means
Source: SAE J2012 / OBD-IIP0AA6 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P0AA6
Source: NHTSA files and the OBD-II standardCan I keep driving with P0AA6 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.