B1907 – OBD-II DTC

OBD-II DTC B1907 – Air Bag Crash Sensor #2 Ground Circuit Failure

DTC B1907 meaning

DTC B1907 refers to a diagnostic trouble code indicating a failure in the ground circuit for Air Bag Crash Sensor #2. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle systems, including airbag functionality. When the system detects an issue with the ground circuit of the specified crash sensor, it triggers this code to alert the technician of a potential problem that could affect airbag deployment in the event of a collision.

DTC B1907 symptoms

Common symptoms associated with DTC B1907 may include:

• Illumination of the airbag warning light on the dashboard
• Possible non-deployment of airbags during a crash
• Diagnostic trouble codes related to airbag systems
• Inconsistent airbag system performance

DTC B1907 causes

Several factors can lead to the triggering of DTC B1907, including:

• Corroded or damaged wiring in the ground circuit
• Loose or poor connections at the airbag sensor or ground point
• Faulty airbag crash sensor #2
• Issues with the airbag control module
• Electrical shorts or open circuits in the airbag system

DTC B1907 seriousness

DTC B1907 is considered serious because it indicates a potential failure in the airbag system. If the ground circuit for the crash sensor is compromised, it may prevent the airbags from deploying in the event of a collision, increasing the risk of injury to occupants. Therefore, it is crucial to address this issue promptly to ensure the safety features of the vehicle are functioning correctly.

How to diagnose DTC B1907

To diagnose DTC B1907, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC B1907.
2. Inspect the wiring and connectors associated with Air Bag Crash Sensor #2 for any visible damage or corrosion.
3. Check the ground connection for continuity and ensure it is secure.
4. Test the airbag crash sensor #2 for proper operation using a multimeter.
5. Examine the airbag control module for any additional fault codes or issues.

How to fix DTC B1907 step-by-step instructions

To fix DTC B1907, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on the airbag system.
2. Inspect and repair any damaged wiring or connectors related to Air Bag Crash Sensor #2.
3. Ensure that the ground connection is clean, secure, and free of corrosion.
4. If the airbag crash sensor #2 is faulty, replace it with a new sensor.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Perform a test drive to ensure the airbag system is functioning correctly and the warning light does not reappear.

How to erase DTC B1907

To erase DTC B1907, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the option to clear or erase trouble codes on the scanner.
4. Select DTC B1907 and confirm the action to erase the code.
5. Disconnect the scanner and turn off the ignition.
6. Start the vehicle and check if the airbag warning light remains off.

Recommended tools for OBD-II diagnostics

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