What does fault code B0053 mean?
The B0053 fault code, applicable to all car manufacturers, means “Second Row Left Seatbelt Sensor (Subfault)“.
Background Information: Seatbelt sensors work on the principle of pressure sensors installed in the seat cushion to check whether the driver or passenger has fastened their seatbelt.
Symptoms of B0053 Fault Code
Signs of this error may include:
- Airbag light illuminated on the dashboard
- SRS system malfunction
- Error code written in module memory
Main Causes of B0053 Fault Code
- A real collision that caused the airbags to deploy
- SRS control module malfunction
- Impact sensor malfunction
- Wiring or connection problems in the SRS system
B0053 Fault Code in Different Vehicles
Chevrolet B0053: In Chevrolet vehicles, code B0053 is usually associated with a shock sensor malfunction or a problem with the SRS module.
GMC B0053: In GMC models, especially the Yukon and Sierra, an SRS system malfunction after an accident may cause this error.
Buick B0053: In Buick vehicles, code B0053 may be related to an SRS system wiring fault.
Cadillac B0053: In Cadillac models, the error usually indicates that the airbag control module needs to be replaced.
Pontiac B0053: In Pontiac vehicles, code B0053 may appear due to a shock sensor malfunction or wiring problems.
How to diagnose error code B0053?
- Connect a diagnostic scanner to the OBD-II connector.
- Read the error codes and note the presence of the B0053 code.
- Check the vehicle for visible damage, especially in the impact sensor area.
- Check the wiring and connection status in the SRS system.
- If necessary, consult a specialist for a more in-depth diagnosis.
Possible Causes and Diagnostic Methods
| Possible Cause | How to check？ |
|---|---|
| The Real Conflict | Check vehicle history, inspect the body |
| SRS module malfunction | Diagnose with an OBD2 scanner |
| Impact sensor malfunction | Check the sensor for damage |
| Wiring problem | Check wiring and connections for damage |
Tools needed: OBD2 diagnostic scanner, multimeter, wiring inspection and repair kit, vehicle repair documents
How to fix error code B0053?
Simple repair methods
- If the error is a false positive, reset the error code using a diagnostic scanner.
- Verify and restore connections in the SRS system
In-depth diagnostic and repair solutions
- Replacement of damaged impact sensor
- Repair or replacement of wiring in the SRS system
- Airbag control module replacement
Troubleshooting by symptoms
| Symptom | Possible Solution |
|---|---|
| Airbag indicator light is on | Diagnose and reset the error code |
| SRS system malfunction | Check and replace defective parts |
| Damage after an accident | Inspect and repair damaged parts |
B0053 Fault FAQ
Can you drive with a B0053 fault code?
It is not recommended, as the airbag system may not function, which could be life-threatening in the event of an accident.
Can error B0053 occur without a crash?
Yes, the fault code can appear due to electronic malfunctions, impact sensor failure, or wiring problems.
How can I fix error B0053 myself?
You can start by checking the wiring and connectors of the SRS system, then reset the error with a scanner. If it reappears, professional diagnosis is needed.
Is error B0053 dangerous for car operation?
Yes, because it can lead to airbag failure, which is crucial in an accident.
Will replacing the SRS module help eliminate B0053?
If the problem is with the module itself, then replacing the module will fix the error. However, you should confirm that the problem is not with the sensor or wiring.
B0053 related OBD2 errors
B0051 – First Row Center Seatbelt Sensor (Subfault)
B0052 – Passenger Seatbelt Sensor (Subfault)
B0054 – Second Row Center Seatbelt Sensor (Subfault)
Important! If the airbag light is on, it means the system may not activate in an accident. You need to contact a specialist immediately for a comprehensive diagnosis and repair of the SRS system. Don’t delay in addressing the problem, as this could affect your safety.