Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the seat belt system in the back seat on the left side. It's not working right and might not keep you safe in a crash.
The B0073 code indicates a fault in the deployment control circuit of the second row left seat belt pretensioner.
The B0073 code is set when the airbag control module detects a malfunction in the electrical circuit that controls the deployment of the seat belt pretensioner for the second row left seat. This pretensioner is a safety device that tightens the seat belt during a collision to help keep the occupant secure.
• Airbag warning light on
• Seat belt pretensioner not functioning
• Diagnostic trouble code stored
• Faulty seat belt pretensioner
• Damaged wiring or connectors
• Faulty airbag control module
Pretensioner: A device that automatically tightens a seat belt in the event of a crash.
Airbag Control Module: A computer that controls the deployment of airbags and seat belt pretensioners.
• Scan the vehicle for stored codes.
• Inspect the wiring and connectors for damage.
• Test the seat belt pretensioner for proper operation.
• Replace the faulty seat belt pretensioner.
• Repair or replace damaged wiring or connectors.
• Replace the airbag control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Chevrolet Tahoe
• GMC Yukon
• Cadillac Escalade
• Regularly inspect seat belt systems.
• Avoid spilling liquids on seat belt mechanisms.
• Have the vehicle's safety systems checked annually.
Safety System Issue
• Do not ignore the airbag warning light.
• Have the seat belt system inspected by a professional.
• Do not attempt to repair airbag systems without proper knowledge.
Check with the vehicle manufacturer for warranty coverage on safety systems.
This code has been associated with issues in vehicles with advanced safety systems, particularly in models with multiple airbags and pretensioners.
High – This issue affects the safety of the vehicle occupants and should be addressed promptly.
Driving with a malfunctioning seat belt pretensioner can be dangerous. Ensure repairs are done by a certified technician.
• Vehicle stationary
• Ignition in the 'ON' position
The second row left seat belt pretensioner is located in the rear left seat area, typically near the seat belt retractor.
Q: What is a seat belt pretensioner?
A: A seat belt pretensioner is a device that tightens the seat belt in the event of a collision to help keep the occupant secure.
Q: Can I drive with the B0073 code?
A: It's not recommended to drive with this code active, as it indicates a safety system malfunction.
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