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Code B0122

Symptoms

• Airbag warning light on

• Airbag system not functioning

• Error message on dashboard

Common Causes

• Faulty airbag sensor

• Damaged wiring or connectors

• Faulty airbag control module

Glossary

OBD-II: On-Board Diagnostics, a system for self-diagnosing and reporting vehicle issues.

Airbag Sensor: A device that detects impact and triggers airbag deployment.

Related Codes

• B0120

• B0121

Laymans terms

This code means there's a problem with the airbag sensor in your car. It's like when a toy's battery is low and it doesn't work right.

Explanation

The B0122 code indicates an issue with the airbag sensor circuit.

Technical description

B0122 is a Body Code indicating a malfunction in the airbag sensor circuit, which could affect the deployment of the airbag system.

Diagnosis steps

• Check for any visible damage to the airbag sensor and wiring.

• Use a diagnostic scanner to read the airbag system codes.

• Inspect the airbag control module for faults.

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

• Screwdrivers

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Honda Accord

• Ford F-150

Preventive measures

• Regularly inspect airbag system components.

• Avoid moisture exposure to electronic components.

• Ensure proper maintenance of vehicle electrical systems.

Error code type

Sensor Issue

User experience recommendations

• Have the airbag system inspected by a professional.

• Do not ignore the airbag warning light.

• Avoid tampering with airbag components if untrained.

Warranty information

Check with your vehicle manufacturer for airbag system warranty coverage.

Historical data

This code has been associated with sensor malfunctions in vehicles manufactured in the early 2000s.

Urgency level

High – Airbag system issues can compromise safety in a collision.

Legal and safety notice

It is illegal to drive a vehicle with a malfunctioning airbag system in some jurisdictions due to safety regulations.

Testing conditions

• Vehicle ignition in ON position

• Airbag system diagnostics active

Component location

The airbag sensor is usually located in the front of the vehicle, near the bumper or engine bay.

FAQs

Q: Can I drive with a B0122 code?
A: It's not recommended as it indicates a potential airbag system failure.

Q: Will resetting the code fix the problem?
A: Resetting the code without addressing the underlying issue will not resolve the problem.

Last updated: Feb 7, 2026 • Source: internal database
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