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.

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Home » OBD2 Codes » B0070

Code B0070

Symptoms

• Airbag warning light on

• Airbags may not deploy in an accident

• Error message on dashboard

Common Causes

• Faulty airbag module

• Damaged wiring or connectors

• Faulty airbag sensor

Glossary

Airbag: A safety device in vehicles that inflates upon impact to protect passengers.

OBD-II: On-Board Diagnostics, a standardized system for self-diagnostics and reporting in vehicles.

Related Codes

• B0071

• B0072

Laymans terms

This code means there's a problem with the airbag system in your car. It's like a warning that something might not work right if you get into an accident.

Explanation

B0070 indicates an issue with the airbag system, specifically related to the right side deployment loop.

Technical description

The B0070 code is triggered when the airbag control module detects a fault in the right side airbag deployment loop. This could be due to a short or open circuit in the wiring or an issue with the airbag itself.

Diagnosis steps

• Scan the vehicle for codes using an OBD-II scanner.

• Inspect the wiring and connectors for damage.

• Test the airbag module and sensors for functionality.

Repair procedures

• Replace faulty airbag module.

• Repair or replace damaged wiring or connectors.

• Replace faulty airbag sensor.

Tools required

• OBD-II scanner

• Multimeter

• Screwdriver set

Estimated repair cost

$150 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Malibu

• GMC Sierra

• Cadillac CTS

Preventive measures

• Regularly inspect airbag system components.

• Avoid tampering with airbag wiring.

• Ensure professional repairs after accidents.

Error code type

Safety System Issue

User experience recommendations

• Do not ignore the airbag warning light.

• Have the vehicle inspected by a professional.

• Avoid driving the vehicle until repaired.

Warranty information

Airbag system components may be covered under a vehicle's safety warranty.

Historical data

B0070 has been a common issue in vehicles with aging airbag systems, often due to wear and tear or previous repairs.

Urgency level

High – Airbag system issues should be addressed immediately to ensure safety.

Legal and safety notice

Driving with a faulty airbag system may be illegal and unsafe.

Testing conditions

• Vehicle parked and ignition on.

• Use OBD-II scanner to read codes.

Component location

The airbag control module is typically located under the dashboard or center console.

FAQs

Q: Can I drive with a B0070 code?
A: It's not recommended to drive with this code as it indicates a problem with the airbag system, which is crucial for safety.

Q: How do I reset the airbag light?
A: The airbag 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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