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Code B0073

Symptoms

• Airbag warning light illuminated

• Airbags may not deploy in an accident

• Possible error message on dashboard

Common Causes

• Faulty airbag sensor

• Damaged wiring or connectors

• Faulty airbag control module

Glossary

Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

Airbag: A safety device in a vehicle that inflates rapidly in the event of a collision to prevent injury.

Related Codes

• B0074

• B0075

Laymans terms

This code means there's a problem with the car's airbag system, specifically with a sensor that helps the airbags know when to inflate.

Explanation

The B0073 code indicates an issue with the airbag system's sensor circuit.

Technical description

B0073 is a diagnostic trouble code (DTC) for a fault in the airbag system, often related to the driver or passenger airbag sensor circuit. This could involve a short or open circuit, or a faulty sensor.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for damage.

• Test the airbag sensor for proper operation.

Repair procedures

• Replace the faulty airbag sensor.

• Repair or replace damaged wiring or connectors.

• Replace the airbag control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Socket set

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Silverado

• Ford F-150

• Toyota Camry

Preventive measures

• Regularly inspect airbag system components.

• Avoid tampering with airbag wiring.

• Ensure professional installation of aftermarket accessories.

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the airbag warning light.

• Get the vehicle inspected by a professional.

• Avoid DIY repairs unless you have proper knowledge.

Warranty information

Airbag system components may be covered under a manufacturer's warranty. Check with your dealer.

Historical data

This code has been associated with airbag system faults in various models, often due to sensor or wiring issues.

Urgency level

High – Airbag system issues can affect vehicle safety.

Legal and safety notice

Driving with a faulty airbag system can be dangerous and may not comply with vehicle safety regulations.

Testing conditions

• Vehicle stationary

• Ignition on

Component location

The airbag sensor is typically located in the front of the vehicle, near the bumper or within the passenger compartment.

FAQs

Q: Can I drive with a B0073 code?
A: It's not recommended, as the airbag system may not function properly in an accident.

Q: How do I reset the airbag warning light?
A: The light can be reset by fixing the underlying issue and using an OBD-II scanner to clear the code.

Last updated: Oct 28, 2025 • Source: internal database
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