• Airbag warning light on the dashboard
• Passenger airbag may not deploy in a collision
• Possible error message on vehicle display
• Faulty passenger airbag module
• Damaged wiring or connectors
• Faulty airbag control module
Airbag: A safety device in vehicles designed to inflate rapidly in the event of a collision.
OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnostics and reporting.
• B0020
• B0022
This code means there's a problem with the airbag system on the passenger side of the car. It's like a safety cushion that might not work right if you have a crash.
The B0021 code indicates an issue with the passenger side frontal deployment loop, which is part of the airbag system.
B0021 is a diagnostic trouble code (DTC) for a fault in the passenger frontal deployment loop, meaning there is an issue with the electrical circuit that controls the passenger side airbag deployment.
• Scan the vehicle for codes and note any other related codes.
• Inspect the passenger airbag wiring and connectors for damage.
• Test the airbag control module for proper operation.
• Replace the passenger airbag module if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the airbag control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$300 - $1000
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect airbag system components.
• Avoid tampering with airbag wiring.
• Ensure proper maintenance of the vehicle's electrical system.
Safety System Issue
• Do not ignore the airbag warning light.
• Have the vehicle inspected by a professional as soon as possible.
Airbag systems may be covered under extended warranties; check with your manufacturer.
Airbag system codes like B0021 have become more common as vehicles have become more advanced with safety features.
High – Airbag issues should be addressed immediately to ensure passenger safety.
Driving with a malfunctioning airbag system can be dangerous and may be illegal in some jurisdictions.
• Vehicle ignition in the ON position
• Airbag system self-test completed
The passenger airbag is located in the dashboard on the passenger side of the vehicle.
Q: Can I drive my car with the B0021 code?
A: It's not recommended to drive with an airbag fault as it may not deploy in a crash.
Q: How do I reset the airbag light?
A: The airbag light can be reset by fixing the underlying issue and then using an OBD-II scanner to clear the code.
