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 communications
5Original wording in English
CADILLAC
This preliminary information communicates an issue with a service headlight message and history DTCs B1B5F sym49 or B1B60 sym49 that advises dealership to verify headlight operation and that engineering is investigating.
CADILLAC
This preliminary information communicates an issue with a service headlight message and history DTCs B1B5F sym49 or B1B60 sym49 that advises dealership to verify headlight operation and that engineering is investigating.
CADILLAC
This preliminary information communicates an issue with a service headlight message and history DTCs B1B5F sym49 or B1B60 sym49 that advises dealership to verify headlight operation and that engineering is investigating.
CADILLAC
This PI communicates a possible concern with the customer experiencing a service headlamp message on startup and DTC's B1B5F SYM49 and/or B1B60 SYM49 maybe found current or history.
Check vehicle applicability
6A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | ESCALADE ↗ | 2026 |
| Cadillac | ESCALADE ESV ↗ | 2026 |
| Cadillac | LYRIQ ↗ | 2026 |
| Cadillac | LYRIQ ↗ | 2025 |
| Cadillac | LYRIQ ↗ | 2024 |
| Cadillac | LYRIQ ↗ | 2023 |
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.