Audi B191CF8
Charge door communication malfunction
Quick answer
B191CF8 is an Audi DTC meaning “Charge door communication malfunction.” Verified evidence links it to interrupted communication between certain DC chargers and the vehicle.
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 B191CF8 mean?
B191CF8 is an Audi DTC meaning “Charge door communication malfunction.” Verified evidence links it to interrupted communication between certain DC chargers and the vehicle.
2. Technical explanation
Audi/NHTSA manufacturer communication states that certain DC chargers can interrupt communication between the charger and vehicle, causing charging to the vehicle to be interrupted. B191CF8 is listed among the DTCs associated with that condition.
3. What system is affected?
Charge door communication / DC charging communication.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- Charging to the vehicle may be interrupted when using certain DC chargers.
6. Possible causes
- Interrupted communication between certain DC chargers and the vehicle.
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. Verified evidence indicates that charging may be interrupted with certain DC chargers.
9. What you can safely do
- If DC charging is interrupted, stop relying on that charging session and seek Audi service guidance.
- Do not attempt high-voltage or charge-door electrical repairs.
10. Step-by-step troubleshooting
- Record the DTC B191CF8 and the DC charger involved if charging was interrupted.
- Have an Audi service facility diagnose the condition. Further diagnostic steps are not established by the supplied verified evidence.
11. When to contact service
Contact an Audi service facility for diagnosis, particularly if DC charging is interrupted or the DTC returns.
12. What the service center may check
- Confirm whether B191CF8 is stored in the vehicle.
- Evaluate the reported interrupted communication between the DC charger and vehicle. Specific test procedures 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 · 2020–2021 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication PDF 10191572: A9321472061788_3, published April 30, 2021. It lists B191CF8 and describes interrupted communication between certain DC chargers and the vehicle.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified source: NHTSA Manufacturer Communication PDF 10191572 (Audi), https://static.nhtsa.gov/odi/tsbs/2021/MC-10191572-0001.pdf. Applicability supplied: 2020–2021 Audi e-tron, US.
19. Frequently asked questions
What does Audi code B191CF8 mean?
It means “Charge door communication malfunction.”
What condition is associated with B191CF8 in the verified manufacturer communication?
The communication between certain DC chargers and the vehicle can be interrupted, causing vehicle charging to be interrupted.
Which vehicles are covered by the supplied applicability evidence?
2020–2021 Audi e-tron vehicles in the United States.