Audi B16D5F1
Tail light cluster, left 2, LED faulty
Quick answer
B16D5F1 indicates: “Tail light cluster, left 2, LED faulty.” Verified applicability is the 2019 Audi e-tron (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 B16D5F1 mean?
B16D5F1 indicates: “Tail light cluster, left 2, LED faulty.” Verified applicability is the 2019 Audi e-tron (US).
2. Technical explanation
Audi service information cited by NHTSA identifies B16D5F1 as a fault stored in the comfort system central control module J393 (address word 0046). The documented fault concerns the left trunk-lid taillight LED.
3. What system is affected?
Left trunk-lid tail light / comfort system central control module J393.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- A taillight warning may be displayed in the instrument cluster.
- The left LED strip in the trunk-lid taillight may flicker.
- A portion of the trunk-lid taillight may remain illuminated 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 inspection by an Audi service provider if the warning, flickering, or remaining illumination is present.
- Do not attempt high-voltage-related repairs; no high-voltage repair procedure is established by the supplied evidence.
10. Step-by-step troubleshooting
- Have the comfort system central control module J393 (address word 0046) scanned for stored DTCs.
- Confirm whether B16D5F1 is stored and document any taillight warning, flickering LED strip, or illumination remaining after ignition-off.
- Further diagnostic steps are not yet established by verified evidence.
11. When to contact service
Audi service inspection is appropriate when B16D5F1 is stored or the documented taillight symptoms occur.
12. What the service center may check
- Scan comfort system central control module J393 (address word 0046) for B16D5F1.
- Inspect and diagnose the left trunk-lid taillight concern using applicable Audi service information. Specific inspection and test procedures are not established by the supplied evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Audi e-tron · 2019 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication 10177420, Audi reference A9120862058647_2, published 2020-07-14. It documents B16D5F1 among possible DTCs associated with trunk-lid taillight warning, LED-strip flickering, or illumination remaining after ignition-off.
- NHTSA Manufacturer Communication 10172756, Audi reference A9120422058647_1, published 2020-03-02. It documents B16D5F1 among possible DTCs associated with trunk-lid taillight warning, LED-strip flickering, or illumination remaining after ignition-off.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified official manufacturer communications are available through NHTSA: https://static.nhtsa.gov/odi/tsbs/2020/MC-10177420-0001.pdf and https://static.nhtsa.gov/odi/tsbs/2020/MC-10172756-0001.pdf
19. Frequently asked questions
What does Audi code B16D5F1 mean?
It means “Tail light cluster, left 2, LED faulty.”
Which vehicle is verified as applicable?
The supplied verified applicability identifies the 2019 Audi e-tron for the US market.
Where can this code be stored?
The cited Audi communications state that it may be stored in comfort system central control module J393, address word 0046.
Can I drive or charge with B16D5F1?
Not yet established by verified evidence.