DTC Codes
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      Audi SRS (Supplemental Restraint System)/Airbag Diagnostic Trouble Codes (DTCs)

      Audi Airbag/SRS Diagnostic Trouble Codes (DTCs): Comprehensive Guide for Troubleshooting and Repair

      For technicians and salvage rebuilders working on Audi vehicles with an illuminated airbag warning light, understanding the specific Diagnostic Trouble Codes (DTCs) is essential for effective troubleshooting and repair. This guide provides a detailed overview of common Audi SRS (Supplemental Restraint System)/Airbag DTC codes related to issues with the airbag control module, airbags, seat belts, impact sensors, collapsible steering column, and pyro fuses. Components that MyAirbags can rebuild or service are highlighted to assist you in efficient repair processes.

      Overview of Audi's SRS/Airbag System

      Audi vehicles are equipped with advanced SRS/Airbag systems designed to enhance occupant safety. These systems include multiple sensors, control units, airbags, and seat belt components that work together to protect passengers in the event of a collision. Faults in any of these components can trigger DTCs and illuminate the airbag warning light.

      Common Airbag Control Module Faults

      Code: 00588

      • Description: Airbag Igniter; Driver Side (N95) Resistance Too High or Too Low
      • Possible Causes: Faulty airbag control module, damaged wiring, poor connections, faulty clock spring.
      • Solution: MyAirbags can reset and repair the airbag control module, restoring it to proper working condition.

      Code: 01217

      • Description: Side Airbag Igniter; Driver Side (N199)
      • Possible Causes: Defective side airbag module, wiring issues, connector problems.
      • Note: Airbag modules must be replaced; they cannot be repaired.

      Airbag Deployment Circuit Faults

      Code: 01218

      • Description: Side Airbag Igniter; Passenger Side (N200)
      • Possible Causes: Faulty side airbag, damaged wiring, poor connections.
      • Note: Airbag modules need to be replaced; they are not serviceable.

      Code: 01221

      • Description: Crash Sensor Side Airbag; Driver Side (G179)
      • Possible Causes: Defective crash sensor, wiring issues, mounting problems.
      • Recommendation: Impact sensors typically need to be replaced; repair is not recommended.

      Seat Belt Pretensioner Faults

      Code: 00591

      • Description: Seat Belt Switch; Driver Side (E24)
      • Possible Causes: Damaged seat belt pretensioner, faulty wiring, connector issues.
      • Solution: MyAirbags can rebuild and repair seat belt pretensioners, restoring them to functional condition.

      Code: 00592

      • Description: Seat Belt Switch; Passenger Side (E25)
      • Possible Causes: Similar issues as the driver's side pretensioner.
      • Solution: MyAirbags can rebuild and repair passenger seat belt pretensioners, ensuring proper operation.

      Impact Sensor Issues

      Code: 01222

      • Description: Crash Sensor Side Airbag; Passenger Side (G180)
      • Possible Causes: Sensor damage, wiring problems, mounting issues.
      • Recommendation: Replace the faulty sensor to ensure proper SRS functionality.

      Code: 01224

      • Description: Crash Sensor for Front Airbag; Driver Side (G283)
      • Possible Causes: Defective front impact sensor, wiring issues, connector problems.
      • Recommendation: Impact sensors typically need to be replaced; repair is not recommended.

      Collapsible Steering Column Faults

      Code: 00816

      • Description: Power Steering Sensor (G250)
      • Possible Causes: Faulty steering angle sensor, wiring issues, internal faults.
      • Recommendation: May require replacement or professional repair; consult an Audi specialist.

      Pyrotechnic Battery Disconnect (Pyro Fuse) Faults

      Code: 01236

      • Description: Safety Battery Terminal (Pyrofuse)
      • Possible Causes: Activation due to collision, faulty wiring, connector problems.
      • Solution: MyAirbags can repair or replace the pyrotechnic battery fuse, restoring proper circuit function.

      Additional Common Faults

      Code: 00654

      • Description: Seat Belt Tensioner Igniter; Driver Side (N153)
      • Possible Causes: Damaged pretensioner, faulty wiring, connector issues.
      • Solution: MyAirbags can rebuild and repair seat belt tensioners, ensuring they function correctly.

      Code: 00655

      • Description: Seat Belt Tensioner Igniter; Passenger Side (N154)
      • Possible Causes: Similar issues as the driver's side tensioner.
      • Solution: MyAirbags can rebuild and repair passenger seat belt tensioners.

      Code: 00589

      • Description: Airbag Igniter; Passenger Side (N131)
      • Possible Causes: Faulty passenger airbag module, wiring issues, connector problems.
      • Note: Airbag modules must be replaced; they cannot be repaired.

      Troubleshooting Tips

      • Use Audi-Specific Diagnostic Tools: Employ diagnostic equipment like VAG-COM (VCDS) to accurately read and interpret Audi-specific fault codes.

      • Perform a Thorough Visual Inspection: Check all related wiring, connectors, and components for signs of damage, corrosion, or disconnection. Pay special attention to areas where wiring may be pinched or frayed.

      • Follow Safety Precautions: Always disconnect the battery and wait at least 10 minutes before working on the SRS to prevent accidental airbag deployment.

      • Replace Non-Serviceable Components with OEM Parts: Use genuine Audi parts to maintain system integrity and ensure compatibility.

      • Consult Service Manuals: Refer to official Audi service manuals for detailed repair procedures, torque specifications, and safety guidelines.

      Recommendations for Salvage Rebuilders

      1. Accurate Diagnostics:

        • Use professional-grade diagnostic equipment to identify all stored DTCs and understand the underlying issues.

      2. Professional Repair Services:

        • For repairable components like the airbag control module and seat belt pretensioners, consider using MyAirbags to ensure they meet OEM specifications and safety requirements.

      3. Regulatory Compliance:

        • Ensure all repairs comply with local and federal safety regulations to guarantee the vehicle's roadworthiness.

      4. Detailed Documentation:

        • Maintain comprehensive records of diagnostics, repairs, parts used, and services performed for transparency and future reference.

      5. Continuous Education:

        • Stay informed about Audi technical service bulletins, safety recalls, and updates related to the SRS/Airbag system.

      Disclaimer

      The codes listed above are generalized and may vary depending on the specific model and year of the Audi vehicle. For precise diagnostics, always refer to the manufacturer's service information or use a professional-grade diagnostic scanner. MyAirbags can help repair and reset specific SRS components, but it's crucial to ensure all repairs are performed by qualified professionals to maintain vehicle safety and compliance with regulations.

      By understanding these common DTCs and knowing which components can be repaired or need replacement, you can effectively troubleshoot and resolve SRS issues in Audi vehicles. Utilizing professional services like MyAirbags not only saves time and money but also ensures that safety systems are restored to their original standards, keeping you and your passengers safe on the road.