Ford P0AA1
Reset Diagnostic Trouble Code (DTC) Occurrence Counter application in FDRS. © 202
Quick answer
For certain 2021–2022 Ford Mustang Mach-E vehicles in the US, Ford TSB 24-2017 states that if P0AA1 remains present after stored DTCs related to the concern are cleared, the BECM Reset Diagnostic Trouble Code (DTC) Occurrence Counter application should be downloaded and run using FDRS.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does P0AA1 mean?
For certain 2021–2022 Ford Mustang Mach-E vehicles in the US, Ford TSB 24-2017 states that if P0AA1 remains present after stored DTCs related to the concern are cleared, the BECM Reset Diagnostic Trouble Code (DTC) Occurrence Counter application should be downloaded and run using FDRS.
2. Technical explanation
Verified evidence identifies P0AA1 in the cited Ford service procedure as one of the DTCs that may remain present after related stored DTCs are cleared. The procedure then directs use of the Battery Energy Control Module (BECM) Reset Diagnostic Trouble Code Occurrence Counter application in Ford Diagnostic and Repair System (FDRS). The supplied evidence does not establish a component-level fault definition for P0AA1.
3. What system is affected?
Battery Energy Control Module (BECM), based on the named FDRS application in Ford TSB 24-2017.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Arrange diagnosis by a Ford dealer or qualified service provider with access to FDRS.
- Do not attempt high-voltage battery or BECM repairs based on this code alone.
10. Step-by-step troubleshooting
- Ford TSB 24-2017 instructs technicians to clear stored DTCs related to the concern.
- If P0ADA, P0ADE, P0AA1, and/or P0AA4 remain present, the TSB instructs technicians to download and run the BECM Reset Diagnostic Trouble Code Occurrence Counter application in FDRS.
- The cited procedure notes that only one module may be updated at a time.
11. When to contact service
Service is appropriate because the verified procedure requires Ford Diagnostic and Repair System (FDRS) access and a BECM application.
12. What the service center may check
- Confirm whether the vehicle is a 2021–2022 Ford Mustang Mach-E in the US.
- Check for stored DTCs related to the concern.
- Clear stored DTCs related to the concern as directed by TSB 24-2017.
- If P0AA1 remains present, run the BECM Reset Diagnostic Trouble Code Occurrence Counter application in FDRS.
- Observe the TSB note that only one module may be updated at a time.
13. Possible repair or resolution
- The verified TSB procedure calls for running the BECM Reset Diagnostic Trouble Code Occurrence Counter application in FDRS when P0AA1 remains present after related DTCs are cleared.
- Whether this procedure resolves every instance of P0AA1 is not yet established by verified evidence.
14. Affected vehicles
- Ford Mustang Mach-E · 2021–2022 · US
15. Related TSBs / service bulletins
- Ford TSB 24-2017, published January 26, 2024: for applicable vehicles, if P0ADA, P0ADE, P0AA1, and/or P0AA4 remain present after related stored DTCs are cleared, download and run the BECM Reset Diagnostic Trouble Code Occurrence Counter application in FDRS. Source: NHTSA Manufacturer Communication PDF 10249760.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official source: NHTSA Manufacturer Communication PDF 10249760, Ford TSB 24-2017, published January 26, 2024: https://static.nhtsa.gov/odi/tsbs/2024/MC-10249760-0001.pdf
19. Frequently asked questions
What does Ford's verified service information say to do for P0AA1?
After clearing stored DTCs related to the concern, if P0AA1 remains present, Ford TSB 24-2017 directs technicians to download and run the BECM Reset Diagnostic Trouble Code Occurrence Counter application in FDRS.
Which vehicles are supported by the supplied evidence?
The supplied applicability evidence covers 2021–2022 Ford Mustang Mach-E vehicles in the US.
Is it safe to drive or charge with P0AA1?
Not yet established by verified evidence.