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
BUICK, CHEVROLET, GMC
This Preliminary Information communication provides information to the technician about vehicles that may have Diagnostic Trouble Code B124B sym 04 set in the Human Machine Interface. When working on the 2014 model year Lacrosse the Human Machine Interface can be reprogrammed using Service Programming System. If working on a 201…
BUICK, CADILLAC, CHEVROLET, GMC
This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code B124B sym 04 in the HMI module. Technician should check the USB port operations if no issue found it should be considered a false code and no components should be replaced. If the USB port is inope…
BUICK
This Preliminary Information communication provides information to the technician about vehicles that may have a Diagnostic Trouble Code B124B sym 04 stored in the Human Machine Interface module. For model year 2014 the Human Machine Interface should be reprogrammed with the latest calibration from TIS2Web. For model year 2015 e…
BUICK
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE A DIAGNOSTIC TROUBLE CODE B124B SYM 04 STORED IN THE HUMAN MACHINE INTERFACE MODULE. FOR MODEL YEAR 2014 THE HUMAN MACHINE INTERFACE SHOULD BE REPROGRAMMED WITH THE LATEST CALIBRATION FROM TIS2WEB. FOR MODEL YEAR 2015 E…
Check vehicle applicability
20A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Buick | LACROSSE ↗ | 2015 |
| Buick | LACROSSE ↗ | 2014 |
| Buick | REGAL ↗ | 2015 |
| Buick | REGAL ↗ | 2014 |
| Cadillac | ATS ↗ | 2015 |
| Cadillac | CTS ↗ | 2015 |
| Cadillac | ELR ↗ | 2015 |
| Cadillac | SRX ↗ | 2015 |
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.