What is an OBD2 code?

An OBD2 (On-Board Diagnostics) code is a diagnostic trouble code (DTC) generated by your vehicle's computer system when it detects a problem. These codes help identify specific issues with your vehicle's engine, transmission, emissions, or other systems.

How do I read OBD2 codes?

To read OBD2 codes, you'll need an OBD2 scanner. Plug it into your vehicle's OBD2 port (usually located under the dashboard), turn your key to the 'ON' position, and follow your scanner's instructions to retrieve the codes. Each code starts with a letter (P, B, C, or U) followed by four numbers.

What do the different types of OBD2 codes mean?

OBD2 codes are categorized by their first letter: P (Powertrain) for engine and transmission issues, B (Body) for interior systems like airbags, C (Chassis) for mechanical systems like brakes, and U (Network) for computer and module communication problems.

🖨️

Home » OBD2 Codes » B0002

Code B0002

Symptoms

• Airbag warning light on the dashboard

• Airbag system disabled

• Possible failure of airbag deployment in a crash

Common Causes

• Faulty airbag module

• Damaged wiring or connectors

• Defective airbag sensor

Glossary

Airbag Module: A device that controls the deployment of airbags.

OBD-II Scanner: A tool used to read and clear trouble codes from the vehicle's computer.

Related Codes

• B0001

• B0003

Laymans terms

This code means there's a problem with the airbag system in your car, which helps protect you in a crash.

Explanation

The B0002 code indicates an issue with the airbag system, specifically related to the passenger's side frontal deployment control.

Technical description

B0002 is a diagnostic trouble code (DTC) for 'Passenger Frontal Deployment Loop (Single Stage or Stage 1, Dual Stage)'. This means there's a malfunction in the circuit controlling the deployment of the passenger-side airbag.

Diagnosis steps

• Check the airbag system for any visible damage.

• Use a diagnostic scanner to read the specific trouble codes.

• Inspect the wiring and connectors for any signs of wear or damage.

Repair procedures

• Replace the faulty airbag module.

• Repair or replace damaged wiring or connectors.

• Reset the airbag system and clear the codes.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$200 - $1000

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Honda Accord

• Ford F-150

Preventive measures

• Regularly inspect airbag system components.

• Avoid tampering with airbag wiring.

• Have the airbag system checked during routine maintenance.

Error code type

Safety System Issue

User experience recommendations

• Do not ignore the airbag warning light.

• Have a professional diagnose and repair the issue promptly.

Warranty information

Airbag systems are often covered under extended warranties. Check with your vehicle manufacturer.

Historical data

The B0002 code has been commonly associated with passenger airbag issues in vehicles manufactured after the year 2000.

Urgency level

High – Airbag issues can affect vehicle safety and should be addressed immediately.

Legal and safety notice

Driving with a malfunctioning airbag system may violate safety regulations and increase injury risk in a crash.

Testing conditions

• Vehicle ignition on

• Airbag system self-test completed

Component location

The airbag module is typically located in the dashboard on the passenger side.

FAQs

Q: Can I drive my car with the B0002 code?
A: It's not recommended as the airbag system may not function properly in a crash.

Q: How do I reset the airbag light?
A: After repairs, use an OBD-II scanner to clear the codes and reset the system.

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

Diagnose Your Check Engine Light