Audi B16D5F6
Tail light cluster, left 2, number plate light faulty
Quick answer
DTC B16D5F6 means “Tail light cluster, left 2, number plate light faulty.” Verified applicability is limited to the 2019 Audi e-tron in the US.
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 B16D5F6 mean?
DTC B16D5F6 means “Tail light cluster, left 2, number plate light faulty.” Verified applicability is limited to the 2019 Audi e-tron in the US.
2. Technical explanation
Audi’s published diagnostic wording identifies a fault involving the left-side tail light cluster 2 and the number plate light. Audi service communications list this DTC as a possible stored code in the comfort system central control module J393, address word 0046.
3. What system is affected?
Rear exterior lighting / comfort system central control module J393 (address word 0046).
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- Audi’s service communications describe possible tail-light flickering.
- Audi’s service communications describe a portion of the trunk-lid tail light remaining on after the ignition is switched off.
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 professional diagnosis if the rear lighting is flickering or remains illuminated after ignition-off.
- Have a qualified Audi service provider inspect the stored fault information and affected lighting system.
10. Step-by-step troubleshooting
- Use an appropriate diagnostic tool to check for B16D5F6 in comfort system central control module J393, address word 0046.
- Do not perform unverified wiring, component, or control-module repairs based on this code alone.
11. When to contact service
Contact an Audi service provider for diagnosis, particularly if rear lighting flickers or remains on after the ignition is turned off.
12. What the service center may check
- Confirm whether B16D5F6 is stored in J393, address word 0046.
- Assess the reported rear-light behavior described in Audi’s service communications.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Audi e-tron · 2019 · US
15. Related TSBs / service bulletins
- Audi of America manufacturer communication A9120422058647_1, published March 2, 2020; NHTSA document MC-10172756-0001. It lists B16D5F6 among possible DTCs in J393 and describes tail-light flickering and a trunk-lid tail-light portion remaining on after ignition-off.
- Audi of America manufacturer communication A9120862058647_2, published July 14, 2020; NHTSA document MC-10177420-0001. It lists B16D5F6 among possible DTCs in J393 and describes tail-light flickering and a trunk-lid tail-light portion remaining on after ignition-off.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official NHTSA-hosted Audi communications: https://static.nhtsa.gov/odi/tsbs/2020/MC-10172756-0001.pdf and https://static.nhtsa.gov/odi/tsbs/2020/MC-10177420-0001.pdf
19. Frequently asked questions
What does B16D5F6 mean?
It means “Tail light cluster, left 2, number plate light faulty.”
Which vehicle is verified as applicable?
Verified applicability is the US-market 2019 Audi e-tron.
Where may this code be stored?
Audi’s service communications list it in the comfort system central control module J393, address word 0046.
Is it safe to drive or charge?
Not yet established by verified evidence.