Audi P0AA100
Hybrid/EV Battery Positive Contactor Circuit Stuck Closed
Quick answer
For a 2022 Audi e-tron GT in the US, DTC P0AA100 means “Hybrid/EV Battery Positive Contactor Circuit Stuck Closed.” Audi’s verified service-bulletin evidence lists this code, but does not establish symptoms, root cause, driving/charging status, or a repair procedure in the supplied evidence.
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 P0AA100 mean?
For a 2022 Audi e-tron GT in the US, DTC P0AA100 means “Hybrid/EV Battery Positive Contactor Circuit Stuck Closed.” Audi’s verified service-bulletin evidence lists this code, but does not establish symptoms, root cause, driving/charging status, or a repair procedure in the supplied evidence.
2. Technical explanation
The supplied Audi/NHTSA manufacturer communication identifies P0AA100 as a high-voltage hybrid/EV battery positive contactor circuit fault described as stuck closed. A contactor is part of the high-voltage battery system; however, further operating behavior or fault logic is not established by the supplied verified evidence.
3. What system is affected?
Hybrid/EV battery positive contactor circuit within the high-voltage battery system.
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 an Audi-qualified service facility; the supplied evidence identifies this as a high-voltage battery-system DTC.
- Do not attempt high-voltage battery or contactor repair yourself.
10. Step-by-step troubleshooting
- Have a qualified technician retrieve and evaluate stored diagnostic trouble codes. No further troubleshooting steps are established by the supplied verified evidence.
11. When to contact service
Audi service is appropriate because the verified evidence is an Audi manufacturer communication concerning a high-voltage battery-system diagnostic code. Urgency is not established by the supplied evidence.
12. What the service center may check
- Verify the presence and status of DTC P0AA100. Additional service checks are not established by the supplied verified evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Audi e-tron GT · 2022 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication PDF 10205971: A9321602065473_1, published December 22, 2021. The supplied excerpt lists P0AA100 as “Hybrid/EV Battery Positive Contactor Circuit Stuck Closed.”
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified source: NHTSA-hosted Audi manufacturer communication 10205971, https://static.nhtsa.gov/odi/tsbs/2021/MC-10205971-0001.pdf. Verified applicability supplied: 2022 Audi e-tron GT, US.
19. Frequently asked questions
What does P0AA100 mean on a 2022 Audi e-tron GT?
It means “Hybrid/EV Battery Positive Contactor Circuit Stuck Closed.”
Is P0AA100 confirmed to apply to the 2022 Audi e-tron GT in the US?
Yes. The supplied verified applicability record identifies the 2022 Audi e-tron GT in the US.
Can I drive or charge with P0AA100?
Not yet established by verified evidence.
Does the supplied Audi bulletin provide a confirmed repair?
No confirmed repair procedure is established by the supplied evidence.