Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
B16D5F4Left tail light 2 turn signal lamp failure
Manufacturer communications
10Original wording in English
AUDI
This bulletin provides information when there is a tail light warning and variois DTCs are stored in the comfort module; B16D431, B16D631, B16D531, and/or B16D731.
BENTLEY
Rear lamp electrical defect - Numerous DTC's evident. Customer statement / workshop findings - Rear lamp warning within the DIP - Numerous DTCs within diagnostic address 46 (J393) - Faulty rear lamp operation Refer to the examples below showing the most popular DTCs which have been evident in conjunction with the afore mentioned…
AUDI
This bulletin contains information for a turn signal or tail light warning lamp with DTC B16D4F4, B16D5F4, B16D6F4, and/or B16D7F4, along with instructions for handling such concerns.
AUDI
This bulletin states to fill out the questionnaire and clear DTCs if the vehicle is within NVLW for DTC(s) B16D4F4, B16D5F4, B16D6F4, B16D7F4, if the vehicle returns then follow additional instructions.
Check vehicle applicability
22A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Audi | A4 ↗ | 2021 |
| Audi | A4 ↗ | 2020 |
| Audi | A4 ALLROAD ↗ | 2021 |
| Audi | A4 ALLROAD ↗ | 2020 |
| Audi | A8 ↗ | 2022 |
| Audi | A8 ↗ | 2021 |
| Audi | A8 ↗ | 2020 |
| Audi | A8 ↗ | 2019 |
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.