B0049 - Airbag Deployment Control Module Fault (Common in 2015-2020 Ford F-150 and 2016-2021 Chevrolet Silverado)

Quick Answer

B0049 means: B0049 indicates a fault in the airbag deployment control module, affecting airbag functionality.

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

Can I drive with B0049? Immediate attention is required to ensure passenger safety.

Common Questions

What does B0049 mean and how does it affect my car?

The B0049 code signifies an issue within the airbag deployment control module, which is crucial for the activation of airbags during an accident. If this code appears, it can prevent airbags from deploying, putting passengers at risk. It's essential to have this checked immediately by a qualified technician to ensure your safety on the road.

What are the most common causes of B0049 and how much does it cost to fix?

Common causes of the B0049 code include a faulty airbag control module, damaged wiring, or malfunctioning impact sensors. Repair costs can range from $100 for simple wiring repairs to $800 for a complete control module replacement, depending on the specific issue and vehicle make and model.

Can I drive my car with B0049 or should I stop immediately?

It is strongly advised not to drive your vehicle if the B0049 code is present, as this affects the airbag system's functionality. Doing so could result in airbags failing to deploy during an accident, significantly increasing the risk of injury.

How can I diagnose B0049 myself using GeekOBD APP?

To diagnose the B0049 code using the GeekOBD APP, connect the app to your vehicle's OBD2 port, scan for codes, and review freeze frame data. This will help you understand the context of the fault and identify if there are other related issues that require attention.

What vehicles are most commonly affected by B0049?

The B0049 code is frequently found in vehicles such as the 2015-2020 Ford F-150 and the 2016-2021 Chevrolet Silverado. Owners of these vehicles should be especially vigilant for airbag system warnings and have their vehicles inspected regularly.

How can I prevent B0049 from happening again?

Regular maintenance of your vehicle's electrical systems, careful inspection of airbag components during service, and avoiding modifications that may affect the wiring can help prevent the occurrence of the B0049 code in the future.

What is B0049?

The Diagnostic Trouble Code (DTC) B0049 indicates a fault in the airbag deployment control module, which is a critical component responsible for the safe deployment of airbags during a collision. This code typically arises when there is a communication issue between the airbag control module and other components, such as the impact sensors or the vehicle's computer systems. When the B0049 code is triggered, it suggests that the airbag system may not function properly in the event of a crash, which poses a significant risk to passenger safety. As a result, the airbag warning light will illuminate on the dashboard, signaling that the system requires immediate attention. Ignoring this code can lead to the airbags failing to deploy during an accident, increasing the risk of injury. It's crucial to address this issue promptly by conducting a thorough diagnostic assessment to determine the root cause and ensure that all components of the airbag system are functional and compliant with safety standards.

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

Symptoms

Common symptoms when B0049 is present:

  • The airbag warning light stays illuminated on the dashboard, indicating a fault in the airbag system.
  • Drivers may experience issues with other safety features, as the airbag system is linked to the vehicle's overall safety functions.
  • In some cases, an audible alarm may sound intermittently, alerting the driver to a malfunctioning airbag system.
  • The vehicle may display other related error codes, which can be retrieved using an OBD2 scanner.
  • In rare instances, the airbag may deploy unexpectedly while driving, posing a severe safety risk.

Possible Causes

Most common causes of B0049 (ordered by frequency):

  1. The most common cause of the B0049 code is a faulty airbag control module, with a likelihood of approximately 40%. This can occur due to electrical issues or manufacturing defects.
  2. Another frequent cause is damaged wiring or faulty connections in the airbag circuit, which can develop over time due to wear and tear or exposure to moisture, making up around 30% of cases.
  3. A less common cause includes malfunctioning impact sensors that fail to communicate with the airbag control module, which is critical for proper deployment.
  4. In some cases, software glitches within the vehicle's computer systems can trigger the B0049 code, though this is relatively rare.
  5. Finally, physical damage to the airbag module resulting from an accident can also lead to this diagnostic code, although it is less frequently encountered.

B0049 Repair Costs

Cost Breakdown by Repair Type

Airbag Control Module Replacement

Replacing the faulty airbag control module with a new or refurbished unit.

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

Repairing damaged wiring or connectors in the airbag system.

  • Total: $100 - $300
  • Success rate: 85%
Money-Saving Tips for B0049
  • 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 B0049 Diagnosis Process

Follow these systematic steps to accurately diagnose B0049. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion around the airbag control module (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion around the airbag control 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: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context and any other related issues (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context and any other related issues (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: Component testing - Use a multimeter to test the airbag control module and related sensors for proper voltage and continuity (20-30 minutes)

Step 3: Component testing - Use a multimeter to test the airbag control module and related sensors for proper voltage and continuity (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: System function test - After any repairs, verify proper operation of the airbag system and clear codes using the GeekOBD APP (10-15 minutes)

Step 4: System function test - After any repairs, verify proper operation of the airbag system and clear codes using the GeekOBD APP (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: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure the airbag system is functioning correctly (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure the airbag system is functioning correctly (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: Airbag Control Module Replacement on 2017 Ford F-150

Vehicle: 2017 Ford F-150, 45,000 miles

Problem: Customer reported airbag warning light on and received error code B0049.

Diagnosis: Performed a visual inspection and found faulty connections at the airbag control module.

Solution: Replaced the airbag control module and repaired the wiring harness.

Cost: $650 (parts: $450, labor: $200)

Result: Airbag system functioning correctly, warning light cleared, and vehicle passed safety inspection.

Case Study 2: Wiring Repair on 2018 Chevrolet Silverado

Vehicle: 2018 Chevrolet Silverado, 30,000 miles

Problem: Customer experienced intermittent airbag warning light and found B0049 code.

Diagnosis: Identified damaged wiring in the airbag system during inspection.

Solution: Repaired the damaged wiring and tested the airbag system.

Cost: $150 (parts: $20, labor: $130)

Result: The airbag system was restored to full functionality, with no further issues reported.

Diagnose B0049

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: B0049
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes