What is the B0054 fault code?
The B0054 fault code, applicable to all car manufacturers, means “Second Row Center 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 the B0054 fault code:
- The airbag fault indicator light appears on the dashboard.
- A safety system fault message is displayed on the vehicle’s display screen.
- The airbag function for the second-row seats is disabled.
- Failure to pass inspection due to active safety errors.
Main causes of error code B0054:
- Damaged or worn seatbelt sensor.
- Open or short circuit in the wiring connecting the sensor to the control unit.
- Corroded or contaminated contacts in the sensor connector.
- Faulty safety system control unit (SRS).
B0054 fault code in different vehicles:
B0054 in Ford Escape: In Ford Escape models, code B0054 may indicate a malfunction in the central second-row seatbelt sensor. It is recommended to check the wiring and connectors for damage or corrosion. (YouTube)
B0054 in Chevrolet Traverse: In Chevrolet Traverse models, this error may be due to a broken seatbelt sensor circuit. It is necessary to diagnose the wiring and replace the damaged components.
B0054 in Toyota Highlander: In the Toyota Highlander, code B0054 may be due to a malfunction of the sensor itself or its connector. It is recommended to check the sensor resistance and contact condition.
B0054 Honda Pilot: In the Honda Pilot, error B0054 may be due to a short circuit in the seatbelt sensor circuit. It is necessary to thoroughly inspect the wiring and eliminate the short circuit.
B0054 in Nissan Pathfinder: In the Nissan Pathfinder, this code may indicate a problem with the safety control unit. It is recommended to perform a comprehensive diagnosis of the SRS system and replace the control unit if necessary.
How to diagnose the B0054 fault code?
- Connect an OBD-II diagnostic scanner to the car’s connector and read the error codes.
- Visually inspect the central second-row seatbelt sensor for damage or wear.
- Check the wiring and connectors connecting the sensor to the control unit for open circuits, short circuits, or corrosion. Check the sensor resistance and continuity with a multimeter.
- If all the above steps fail to identify the problem, perform a Safety Restraint System (SRS) diagnostic.
Possible Causes and Diagnostic Methods
| Possible Cause | How to Check？ |
|---|---|
| Faulty seat belt sensor | Visual inspection, multimeter resistance check |
| Open or short circuit in the wiring | Wiring integrity check, short circuit test |
| Corrosion or contamination of connector contacts | Inspection and cleaning of contact points, application of contact cleaner |
| SRS control unit malfunction | Diagnosis using an OBD2 scanner |
Tools needed: OBD-II diagnostic scanner, multimeter, trim removal tool kit, contact cleaner
How to fix error code B0054?
Simple Repair Methods
- Clean the contacts of the seat belt sensor connector.
- Check and restore wiring integrity.
- After troubleshooting, reset the error code using a diagnostic scanner.
In-depth Diagnostic and Repair Solutions
- Replace the faulty seat belt sensor.
- Repair or replace damaged wires.
- Replacement or reprogramming of the Safety Restraint System (SRS) control unit if it is faulty.
Troubleshooting by Symptoms
| Symptom | Possible Solution |
|---|---|
| Airbag indicator light stays on | Diagnose and troubleshoot sensor or wiring faults |
| Safety fault reported | Check and repair the communication circuit between the sensor and the control unit |
| Unable to reset error code | Check and replace the SRS control unit if necessary |
B0054 Fault Frequently Asked Questions
Can you drive with a B0054 fault code?
It is not recommended, as the airbag system may not deploy correctly in an accident, reducing passenger safety.
Will resetting the battery remove the B0054 error?
No, if the fault persists, the error will reappear after resetting. You must address the cause of the code before performing a reset.
Can I replace the seat belt sensor myself?
Yes, if you have basic knowledge and tools. However, be sure to disconnect the battery before starting work to avoid airbag deployment.
Do I need to perform repeated diagnostics after repair?
Yes, after troubleshooting, you need to re-diagnose and ensure that the error code no longer appears.
B0054 Fault-Related OBD2 Errors
B0053 – Second Row Left Seatbelt Sensor (Subfault)
B0055 – Second Row Right Seatbelt Sensor (Subfault)
B0057 – Third Row Center Seatbelt Sensor (Subfault)
Important! Ignoring this error may lead to reduced effectiveness of the safety system in the event of an accident. Do not delay in repairing the safety system. Even if the vehicle is operating normally, a malfunction in the SRS system can have serious consequences in an accident. Please contact a qualified technician for diagnosis and repair.