B1930 – Air Bag Safing Sensor Output Circuit Short To Ground

The ODBII code B1930 indicates a fault in the airbag system where the safing sensor output circuit is shorted to ground, potentially affecting the deployment of the airbag in the event of a collision.

The severity of ODBII code B1930 is typically considered high.

Common Causes For: B1929 Air Bag Safing Sensor Output Circuit Open

• Damaged wiring or connectors
• Short circuit in the airbag system wiring
• Faulty airbag safing sensor
• Corroded connectors
• Poor ground connection
• Malfunctioning airbag control module
• Improper installation or repair of airbag components

Common misdiagnosis for B1930 Air Bag Safing Sensor Output Circuit Short To Ground

• Faulty airbag control module
• Defective airbag sensor
• Wiring issues or shorts in the harness
• Faulty seat belt tensioner
• Incorrectly installed or damaged airbag
• Malfunctioning crash sensor
• Issues with the vehicle’s body control module (BCM)

Common Troubleshooting Steps

When dealing with an OBD-II code B1930, which indicates an issue with the Air Bag Safing Sensor Output Circuit Short to Ground, it’s important to follow a systematic approach to troubleshoot the problem. Here are common troubleshooting steps:

• Scan Tool Verification:
• Use an OBD-II scanner to confirm the presence of the B1930 code. Check for any additional codes that may provide more context about the issue.
• Visual Inspection:
• Inspect the wiring and connectors associated with the airbag system, particularly the safing sensor. Look for signs of damage, corrosion, or loose connections.
• Check the airbag module and any related components for physical damage.
• Check for Shorts:
• Use a multimeter to check for continuity in the safing sensor output circuit. Look for any shorts to ground in the wiring harness.
• Disconnect the battery before performing any tests to avoid accidental deployment of the airbag.
• Test the Safing Sensor:
• If accessible, test the safing sensor itself according to the manufacturer’s specifications. This may involve checking resistance or voltage output.
• Replace the sensor if it is found to be faulty.
• Inspect Ground Connections:
• Ensure that all ground connections related to the airbag system are secure and free of corrosion. A poor ground can cause erroneous signals.
• Check the Airbag Control Module:
• Inspect the airbag control module for any signs of damage or failure. If necessary, test the module according to the manufacturer’s guidelines.
• If the module is suspected to be faulty, it may need to be replaced or reprogrammed.
• Clear Codes and Test Drive:
• After performing repairs, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Consult Technical Service Bulletins (TSBs):
• Check for any TSBs related to the B1930 code for your specific vehicle make and model. Manufacturers may have specific recommendations or known issues.
• Professional Diagnosis:
• If the issue persists after following the above steps, consider seeking help from a professional technician who specializes in automotive electrical systems or airbag systems. Always remember to follow safety precautions when working with airbag systems, as they can be dangerous if mishandled. If you’re unsure about any step, it’s best to consult a professional.