B0279 - Airbag System Malfunction in Honda Accord and Other Models

Quick Answer

B0279 means: B0279 indicates an issue with the side airbag deployment circuit.

Fix: Check and replace faulty components Cost: $400 - $800 Time: 90-180 minutes

Can I drive with B0279? Immediate attention is advised to ensure airbag functionality.

Common Questions

What does B0279 mean and how does it affect my car?

DTC B0279 indicates a malfunction in the airbag system, specifically related to the side airbags. This can prevent the airbags from deploying in a crash, significantly increasing injury risk. It's vital to address this promptly to ensure your vehicle's safety features are operational.

What are the most common causes of B0279 and how much does it cost to fix?

The most common causes of B0279 include a faulty airbag control module, damaged wiring, and malfunctioning sensors. Repair costs can range from $100 for wiring repairs to $800 for module replacement, depending on the complexity of the issue.

Can I drive my car with B0279 or should I stop immediately?

It is not safe to drive with the B0279 code present. The airbag system may not deploy in the event of an accident, which poses a serious safety risk. It's best to have the issue diagnosed and repaired as soon as possible.

How can I diagnose B0279 myself using GeekOBD APP?

To diagnose B0279 using the GeekOBD APP, first connect the app to your vehicle’s OBD port. Run a full scan to retrieve all codes, including B0279. Review the freeze frame data for context on when the code was triggered, and check for any related codes that might indicate underlying issues.

What vehicles are most commonly affected by B0279?

DTC B0279 is commonly seen in vehicles like the Honda Accord (2008-2012), Acura TSX (2008-2012), and various models from manufacturers that utilize similar airbag systems. It's advisable to check for any recalls or technical service bulletins (TSBs) related to airbag systems in your vehicle.

How can I prevent B0279 from happening again?

To prevent B0279 from recurring, regularly inspect your vehicle’s airbag system, keep the wiring and connectors free of corrosion, and avoid modifications near airbag components. Following the manufacturer's recommended maintenance schedule can also help.

What is B0279?

DTC B0279 indicates a fault within the airbag system, specifically related to the side airbag deployment circuit. This diagnostic trouble code is often triggered in various vehicles including the Honda Accord from 2008 to 2012 and the Acura TSX of similar years. When this code is present, it typically means that the vehicle's onboard diagnostic system has detected an issue with the side airbag or the circuit that activates it. This can result from a range of issues such as a faulty airbag module, damaged wiring, or a malfunctioning airbag sensor. The implications of this code are significant as it indicates that the airbag system may not function properly in the event of a collision, increasing the risk of injury. Therefore, it’s crucial to address this code promptly to ensure the safety features of your vehicle are operational. Ignoring this code could lead to a situation where the airbags fail to deploy, which can have serious consequences during an accident. Regular checks and maintenance of the airbag system, particularly after any accidents or repairs in the vicinity of the airbag components, can prevent this code from appearing.

System: B - Body (Airbags, Lighting, Security, Climate Control)

Symptoms

Common symptoms when B0279 is present:

  • The airbag warning light illuminates on the dashboard, indicating a problem with the airbag system.
  • You may notice the side airbags fail to deploy during a crash test or controlled demonstration.
  • The vehicle may experience intermittent warnings or error messages related to airbag functionality.
  • Inconsistent performance of the airbag system, such as delayed deployment signals or false alarms.
  • A noticeable increase in diagnostic trouble codes related to the airbag system, indicating underlying issues.

Possible Causes

Most common causes of B0279 (ordered by frequency):

  1. {'cause': 'Faulty airbag control module - 40% likelihood. This component is crucial for interpreting signals from the sensors.', 'details': 'If the module is not functioning properly, it can prevent the airbags from deploying.'}
  2. {'cause': 'Damaged wiring or connectors - 30% likelihood. Wiring issues often arise from wear and tear or after accidents.', 'details': 'Frayed wires or loose connections can interrupt the circuit necessary for airbag deployment.'}
  3. {'cause': 'Malfunctioning airbag sensors - 20% likelihood. Sensors detect impacts and signal the airbag to deploy.', 'details': 'If these sensors are faulty, the airbag may not deploy when needed.'}
  4. {'cause': 'Previous repairs or modifications - 5% likelihood. Any work done near airbag components can inadvertently cause issues.', 'details': 'Inappropriate handling during repairs can lead to disconnections or damage.'}
  5. {'cause': 'Corrosion or environmental damage - 5% likelihood. Vehicles exposed to harsh conditions may develop corrosion.', 'details': 'Corrosion can affect electrical connections and wiring.'}

B0279 Repair Costs

Cost Breakdown by Repair Type

Airbag Control Module Replacement

Replacing a faulty airbag control module.

  • Total: $400 - $800
  • Success rate: 90%
Wiring Repair

Repairing damaged wiring or connectors in the airbag circuit.

  • Total: $100 - $300
  • Success rate: 85%
Sensor Replacement

Replacing malfunctioning airbag sensors.

  • Total: $150 - $400
  • Success rate: 80%
Money-Saving Tips for B0279
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional B0279 Diagnosis Process

Follow these systematic steps to accurately diagnose B0279. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Perform an initial visual inspection

Step 1: Perform an initial visual inspection. Check for visible damage to wiring, connectors, and the airbag module (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: Use the GeekOBD APP to scan for all stored codes and freeze frame data

Step 2: Use the GeekOBD APP to scan for all stored codes and freeze frame data. This helps understand the context of the fault (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Conduct component testing

Step 3: Conduct component testing. Use a multimeter to check the resistance and continuity of the airbag circuits and sensors (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: Run a system function test to verify the proper operation of the airbag system after any repairs (10-15 minutes)

Step 4: Run a system function test to verify the proper operation of the airbag system after any repairs (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Perform a road test to ensure the airbag system is functioning correctly under various conditions (15-20 minutes)

Step 5: Perform a road test to ensure the airbag system is functioning correctly under various conditions (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Repair Case: 2010 Honda Accord Airbag Malfunction

Vehicle: 2010 Honda Accord, 85,000 miles

Problem: Customer reported airbag warning light illuminated.

Diagnosis: Initial scan revealed DTC B0279. Visual inspection showed damaged wiring at the airbag module.

Solution: Replaced the damaged wiring harness and reset the airbag control module.

Cost: $350 (including labor and parts)

Result: After repairs, the airbag system was tested and functioned properly; warning light remained off.

Case Study 2: Repair Case: 2011 Acura TSX Airbag System Failure

Vehicle: 2011 Acura TSX, 75,000 miles

Problem: Customer experienced intermittent airbag warning light.

Diagnosis: DTC B0279 was stored. Further diagnostics revealed a faulty airbag control module.

Solution: Replaced the airbag control module and performed a system check.

Cost: $600 (parts and labor included)

Result: Post-repair testing confirmed all airbags were operational, and the warning light was cleared.

Diagnose B0279

Use GeekOBD APP for professional diagnosis!

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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B0279
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes