Audi P2B2800
Hybrid/EV Battery Pack Coolant Pump Performance. Technical Service Bulletin Page 2 of 4 © 2022 Audi of America, Inc. All rights reserved. Information contained in this document is
Quick answer
P2B2800 is identified in an Audi technical service bulletin as “Hybrid/EV Battery Pack Coolant Pump Performance.”
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 P2B2800 mean?
P2B2800 is identified in an Audi technical service bulletin as “Hybrid/EV Battery Pack Coolant Pump Performance.”
2. Technical explanation
Verified evidence places this DTC in Hybrid Battery Management (BMCe) J840, address word 008C. The supplied Audi/NHTSA bulletin states that, when the customer concern can be reproduced, P2B2800 may be logged along with or separately from P0C4A00 and P0CFF00.
3. What system is affected?
Hybrid/EV battery pack coolant pump; Hybrid Battery Management (BMCe) J840, address word 008C.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- The supplied bulletin refers to a customer statement that can be reproduced, but the specific customer symptom is not included in the 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.
- Do not attempt high-voltage battery or coolant-pump repair procedures yourself.
10. Step-by-step troubleshooting
- Use a suitable diagnostic tool to check Hybrid Battery Management (BMCe) J840 at address word 008C for stored DTCs.
- The verified bulletin identifies possible accompanying DTCs P0C4A00 and P0CFF00.
- Further diagnostic steps are not established by the supplied verified evidence.
11. When to contact service
Contact an Audi dealer or qualified EV service facility for diagnosis, especially if P2B2800 is stored in Hybrid Battery Management.
12. What the service center may check
- Confirm whether P2B2800 is stored in BMCe J840, address word 008C.
- Check whether P0C4A00 or P0CFF00 are also logged.
- Verify whether the reported customer concern can be reproduced, as described in the bulletin.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Audi Q4 e-tron · 2022 · US
15. Related TSBs / service bulletins
- Audi Technical Service Bulletin evidence is available through NHTSA Manufacturer Communication PDF 10227024 (published November 7, 2022): https://static.nhtsa.gov/odi/tsbs/2022/MC-10227024-0001.pdf
16. Recall information
- No recall is established by the supplied verified evidence.
17. Official manufacturer information
Audi/NHTSA manufacturer communication 10227024 identifies P2B2800 as Hybrid/EV Battery Pack Coolant Pump Performance for the applicable vehicle evidence supplied.
19. Frequently asked questions
What does Audi DTC P2B2800 mean?
The verified bulletin identifies P2B2800 as “Hybrid/EV Battery Pack Coolant Pump Performance.”
Where is P2B2800 recorded?
The supplied bulletin places this DTC in Hybrid Battery Management (BMCe) J840, address word 008C.
Which vehicle is covered by the supplied applicability evidence?
The supplied applicability evidence identifies the 2022 Audi Q4 e-tron in the United States.
Can I drive or charge with P2B2800?
Not yet established by verified evidence.