Audi B16D5F2
Left rear tail lamp 2 Tail lamp fault
Quick answer
Audi DTC B16D5F2 means “Left rear tail lamp 2 Tail lamp fault.” Verified Audi service information associates it with a trunk-lid taillight LED strip that may flicker or may remain partly illuminated after the ignition is switched off.
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 B16D5F2 mean?
Audi DTC B16D5F2 means “Left rear tail lamp 2 Tail lamp fault.” Verified Audi service information associates it with a trunk-lid taillight LED strip that may flicker or may remain partly illuminated after the ignition is switched off.
2. Technical explanation
Audi service information identifies B16D5F2 as a fault for the left rear tail lamp 2. The cited bulletin says this code may be stored in the comfort system central control module J393 (address word 0046) when the left or right LED strip of the trunk-lid taillight flickers or when part of the trunk-lid taillight remains on after ignition-off. The evidence provided does not establish a specific failed component or repair for B16D5F2.
3. What system is affected?
Left rear tail lamp 2 / trunk-lid taillight, with the DTC potentially stored in 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
- The left or right LED strip of the trunk-lid taillight may flicker.
- A portion of the trunk-lid taillight may remain on after the ignition is turned 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 diagnosis by an Audi-qualified service provider if the taillight flickers or remains illuminated after ignition-off.
- Record whether the issue occurs on the left or right trunk-lid taillight and whether it persists after ignition-off.
10. Step-by-step troubleshooting
- A service provider can check for B16D5F2 in comfort system central control module J393 (address word 0046).
- Do not attempt high-voltage-related repairs; the supplied evidence concerns the rear lighting system and does not provide repair procedures.
11. When to contact service
Audi service evaluation is appropriate because an official Audi manufacturer communication documents this DTC and related rear-lighting symptoms. Whether service is required is not established by the supplied diagnostic record.
12. What the service center may check
- Scan comfort system central control module J393 (address word 0046) for B16D5F2.
- Verify the reported lighting behavior: trunk-lid taillight LED-strip flickering or a portion of the trunk-lid taillight remaining illuminated after ignition-off.
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 PDF 10177420, Audi communication A9120862058647_2, published July 14, 2020. It documents B16D5F2 and the listed trunk-lid taillight symptoms.
- NHTSA Manufacturer Communication PDF 10172756, Audi communication A9120422058647_1, published March 2, 2020. It documents B16D5F2 and the listed trunk-lid taillight symptoms.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified applicability in the supplied database is Audi e-tron, model year 2019, US region. Official NHTSA-hosted Audi manufacturer communications: 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 B16D5F2 mean?
It means “Left rear tail lamp 2 Tail lamp fault.”
What symptoms are documented with B16D5F2?
Audi service information documents possible trunk-lid taillight LED-strip flickering and a portion of the trunk-lid taillight remaining on after ignition-off.
Which module may store B16D5F2?
The cited Audi service information says the code may be stored in comfort system central control module J393, address word 0046.
Can I drive or charge with B16D5F2?
Not yet established by verified evidence.
What repair fixes B16D5F2?
Not yet established by verified evidence.