B1905 – OBD-II DTC

OBD-II DTC B1905 – Air Bag Crash Sensor #2 Feed/Return Circuit Short To Battery

DTC B1905 meaning

DTC B1905 refers to a diagnostic trouble code indicating a problem with the airbag system, specifically related to Crash Sensor #2. This code signifies that there is a short circuit in the feed or return circuit of the sensor, which can prevent the airbag system from functioning correctly in the event of a collision.

DTC B1905 symptoms

Common symptoms associated with DTC B1905 may include:

• Illumination of the airbag warning light on the dashboard
• Inconsistent airbag deployment during crash simulations
• Possible malfunction of other safety features related to the airbag system
• Diagnostic scanner may show additional related codes

DTC B1905 causes

Several factors can lead to the occurrence of DTC B1905, including:

• Wiring issues such as frayed or damaged wires in the sensor circuit
• Corrosion or poor connections at the sensor or connector terminals
• Faulty Crash Sensor #2 itself
• Issues with the airbag control module

DTC B1905 seriousness

DTC B1905 is considered serious because it directly affects the airbag system’s ability to deploy in the event of a crash. If the airbag system is compromised, it can lead to increased risk of injury during an accident. Therefore, it is crucial to address this code promptly to ensure passenger safety.

How to diagnose DTC B1905

To diagnose DTC B1905, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC B1905.
2. Inspect the wiring and connectors associated with Crash Sensor #2 for any visible damage or corrosion.
3. Check the resistance and continuity of the sensor circuit using a multimeter.
4. Test the functionality of Crash Sensor #2 by following manufacturer-specific testing procedures.
5. Examine the airbag control module for any faults or related codes.

How to fix DTC B1905 step-by-step instructions

To fix DTC B1905, follow these steps:

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 Crash Sensor #2.
3. If the sensor is faulty, replace Crash Sensor #2 with a new one.
4. Reconnect all connectors and ensure they are secure.
5. Reconnect the vehicle’s battery.
6. Clear the DTC using an OBD-II scanner and perform a test drive to verify that the code does not return.

How to erase DTC B1905

To erase DTC B1905, 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. Confirm the action to erase DTC B1905.
5. Disconnect the scanner and turn off the ignition.
6. Start the vehicle and check if the airbag warning light remains off.

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