Ford P0AA2
10C666-C 1 High Vol
Quick answer
Ford DTC P0AA2 is documented here as “10C666-C 1 High Vol.” Verified evidence links it to certain 2021–2022 US Ford Mustang Mach-E vehicles and Ford TSB 24-2017.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
Watch Videos
Relevant videos play here without leaving this diagnostic page.
No sufficiently relevant embeddable video has been accepted for this diagnostic yet.
Videos are supporting material and never override OEM or regulator evidence.
1. What does P0AA2 mean?
Ford DTC P0AA2 is documented here as “10C666-C 1 High Vol.” Verified evidence links it to certain 2021–2022 US Ford Mustang Mach-E vehicles and Ford TSB 24-2017.
2. Technical explanation
The supplied Ford/NHTSA evidence identifies P0AA2 in a parts listing context as “10C666-C 1 High Vol.” The source also lists P0AA2 among DTCs that may appear with an illuminated malfunction indicator lamp (MIL) and/or powertrain malfunction (wrench) indicator. The exact fault mechanism and diagnostic definition are not yet established by verified evidence.
3. What system is affected?
Not yet established by verified evidence. The supplied TSB evidence references a part described only as “High Vol.”
4. How serious is this code?
Unknown. The supplied diagnostic record lists severity as unknown.
5. Symptoms you may notice
- Illuminated MIL may be present.
- Powertrain malfunction (wrench) indicator may be present.
6. Possible causes
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. The supplied diagnostic record lists safe-to-drive status as unknown.
8. Can I charge the vehicle?
Unknown. The supplied diagnostic record lists safe-to-charge status as unknown.
9. What you can safely do
- If the MIL or powertrain malfunction/wrench indicator is illuminated, arrange Ford service diagnosis.
- Do not attempt high-voltage component repair or testing yourself.
- Record any warning indicators and stored diagnostic codes for the service visit.
10. Step-by-step troubleshooting
- Use a suitable diagnostic tool or have a qualified Ford EV technician confirm whether P0AA2 is stored.
- Check Ford service information for TSB 24-2017 applicability using the vehicle’s VIN and build details.
- Further diagnostic steps are not yet established by verified evidence.
11. When to contact service
Ford service evaluation is appropriate because the verified source associates P0AA2 with MIL and/or powertrain malfunction indicator concerns on applicable Mustang Mach-E vehicles.
12. What the service center may check
- Confirm whether the vehicle is a US-market 2021–2022 Ford Mustang Mach-E.
- Confirm whether P0AA2 is present.
- Check whether Ford TSB 24-2017 applies to the specific vehicle.
- Follow the applicable Ford service procedure; the detailed procedure is not included in the supplied evidence.
13. Possible repair or resolution
- Not yet established by verified evidence. The supplied TSB excerpt references part number LK9Z-10C666-C, described as “High Vol,” but does not establish a complete repair, replacement criteria, or resolution in the provided evidence.
14. Affected vehicles
- Ford Mustang Mach-E · 2021–2022 · US
15. Related TSBs / service bulletins
- Ford TSB 24-2017, published by NHTSA as Manufacturer Communication PDF 10249760 on 2024-01-26. The supplied excerpt lists P0AA2 among DTCs associated with an illuminated MIL and/or powertrain malfunction (wrench) indicator. Applicability beyond the supplied 2021–2022 US Mustang Mach-E record is not established by verified evidence.
16. Recall information
- No recall information was supplied or established by verified evidence.
17. Official manufacturer information
Official source: NHTSA Manufacturer Communication PDF 10249760, Ford TSB 24-2017: https://static.nhtsa.gov/odi/tsbs/2024/MC-10249760-0001.pdf
19. Frequently asked questions
What does Ford P0AA2 mean?
The supplied diagnostic record labels P0AA2 as “10C666-C 1 High Vol.” A more specific technical meaning is not yet established by verified evidence.
Which vehicles are supported by the supplied evidence?
The supplied applicability record identifies US-market 2021–2022 Ford Mustang Mach-E vehicles.
Can P0AA2 turn on the wrench light?
Yes. The supplied Ford TSB excerpt lists P0AA2 among DTCs associated with an illuminated MIL and/or powertrain malfunction (wrench) indicator.
Is it safe to drive or charge with P0AA2?
Not yet established by verified evidence. Both safe-to-drive and safe-to-charge status are listed as unknown in the supplied diagnostic record.