B1887 – OBD-II DTC

OBD-II DTC B1887 – Air Bag Driver Circuit Resistance Low or Shorted Together

DTC B1887 meaning

DTC B1887 refers to a diagnostic trouble code indicating a problem with the airbag driver’s circuit. Specifically, it signifies that the resistance in the airbag driver’s circuit is low or that the circuit is shorted together. This can prevent the airbag system from functioning correctly, posing a safety risk in the event of a collision.

DTC B1887 symptoms

Common symptoms associated with DTC B1887 may include:

• Illumination of the airbag warning light on the dashboard
• Potential malfunction of the airbag system
• Inconsistent airbag deployment during a crash
• Possible diagnostic trouble codes related to the airbag system

DTC B1887 causes

Several factors can lead to the occurrence of DTC B1887, including:

• Damaged or frayed wiring in the airbag driver’s circuit
• Corrosion or poor connections at the airbag module or connectors
• Faulty airbag module
• Short circuits caused by aftermarket modifications or repairs
• Defective airbag sensor

DTC B1887 seriousness

DTC B1887 is considered serious because it directly affects the airbag system’s functionality. If the airbag system is compromised, it may not deploy in the event of an accident, increasing the risk of injury to the occupants. Therefore, it is crucial to address this issue promptly.

How to diagnose DTC B1887

To diagnose DTC B1887, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC B1887.
2. Inspect the airbag driver’s circuit wiring for any visible damage or corrosion.
3. Check the connectors for secure connections and signs of wear.
4. Test the resistance of the airbag driver’s circuit using a multimeter.
5. Compare the readings to the manufacturer’s specifications.
6. If necessary, perform a continuity test to identify any shorts in the circuit.
7. Inspect the airbag module and sensor for faults.

How to fix DTC B1887 step-by-step instructions

To fix DTC B1887, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety while working on the airbag system.
2. Repair or replace any damaged wiring or connectors in the airbag driver’s circuit.
3. Ensure all connections are clean and secure.
4. If the airbag module is faulty, replace it with a new or refurbished unit.
5. Recheck the resistance of the airbag driver’s circuit to ensure it is within specifications.
6. Reconnect the battery and clear the DTC using an OBD-II scanner.
7. Perform a test drive to verify that the airbag warning light does not reappear.

How to erase DTC B1887

To erase DTC B1887, 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 trouble codes section on the scanner.
4. Select the option to clear or erase the codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and turn off the ignition.
7. Start the vehicle and check if the airbag warning light remains off.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.