FAULTBASE
Error CodesASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Volvo/XC90/Second Generation (2015-2024)/what does the B10D4 code indicate for my Volvo XC90 Second Generation (2015-2024)?

what does the B10D4 code indicate for my Volvo XC90 Second Generation (2015-2024)?

Volvo XC90 Second Generation (2015-2024)

Error Codes
Severity: criticalDifficulty: mediumError Code: B10D42-4 hours
3 min read
564 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix B10D4 airbag system fault in Volvo XC90. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
B10D4
Component
Electrical
Repair Time
2-4 hours

Safety Warnings

  • ⚠Always disconnect the battery before working on the airbag system to prevent accidental deployment.
  • ⚠Allow the system to discharge for at least 10 minutes after disconnecting the battery before proceeding with repairs.

Symptoms

  • •Airbag warning light illuminated on the dashboard
  • •Faulty airbag indicator in the instrument cluster
  • •Potential failure of passenger airbag to deploy in an accident
  • •Inconsistent airbag system behavior during self-diagnostics
  • •Possible loss of other safety features related to the airbag system

Diagnostic Steps

  1. 1Scan the vehicle's OBD-II system using a compatible scanner to confirm the B10D4 code and check for any additional codes.
  2. 2Inspect the front passenger airbag connector and wiring for visible signs of damage or corrosion.
  3. 3Verify the status of the passenger seat occupancy sensor by checking the connector under the seat.
  4. 4Perform a continuity test on the airbag wiring harness using a multimeter.
  5. 5Check the vehicle’s battery voltage to ensure it meets the minimum requirements for the airbag system to operate correctly.
  6. 6Reset the fault codes and perform a system self-check to confirm if the issue persists.

Solution

Solution

1. Preparation

  • Gather all necessary tools and parts.
  • Disconnect the vehicle battery to prevent accidental deployment of the airbag.
  • Wait at least 10 minutes after disconnecting the battery before proceeding to allow the system to discharge.

2. Inspect and Repair Wiring

  • Tools Required: Multimeter, socket set, wire strippers/crimpers
  • Inspect the wiring harness connected to the passenger airbag for any signs of wear, fraying, or corrosion.
  • If damaged wires are found, cut out the damaged section and splice in new wiring using appropriate gauge wire.
  • Ensure all connections are secure and insulated to prevent short circuits.

3. Check and Replace Occupancy Sensor (if needed)

  • Parts Required: New passenger seat occupancy sensor (if faulty)
  • Remove the passenger seat by unbolting it from the floor.
  • Disconnect the connector for the occupancy sensor under the seat.
  • Replace the sensor with a new one, ensuring proper alignment and connection.
  • Reinstall the passenger seat securely.

4. Reconnect Battery and Test System

  • Reconnect the vehicle battery and ensure all tools are removed from the work area.
  • Turn on the ignition and check for any warning lights on the dashboard.
  • Perform a system self-check using the OBD-II scanner to confirm that the B10D4 code does not reappear.

Verification

After completing the repair, verify that the issue has been resolved:

  • Test the affected component to ensure it functions correctly
  • Check for any error codes or warning lights
  • Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • OBD-II scanner
  • Multimeter
  • Socket set
  • Wire strippers/crimpers

Parts Required

  • Passenger seat occupancy sensor (if faulty)

Additional Information

Error CodeB10D4
Component

Electrical

Repair Time

2-4 hours

Difficulty

medium

Severity

critical

Tools

4 items

Parts

1 items

Related Faults

  1. what should I do if my Volvo XC90 blower motor only works on one speed?

    Learn how to diagnose and fix the blower motor speed issue in your Volvo XC90. Step-by-step guide with diagnostic procedures and repair instructions.

    HVAC5 symptoms

  2. what are common reasons for my Volvo XC90 battery dying quickly

    Discover common reasons for rapid battery depletion in Volvo XC90. Follow our diagnostic steps and solutions to resolve electrical issues effectively.

    Electrical6 symptoms

  3. what to do if my Volvo XC90 air conditioning is not blowing cold air

    Learn how to diagnose and fix the AC not blowing cold air in your Volvo XC90. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    HVAC5 symptoms

  4. why does my Volvo XC90 battery drain overnight

    Learn how to diagnose and fix battery drain issues in Volvo XC90. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Electrical5 symptoms

  5. what should I do if my Volvo XC90 check engine light is flashing

    Learn how to diagnose and fix a flashing check engine light in your Volvo XC90. Step-by-step guide with diagnostic procedures and repair instructions.

    Engine5 symptoms

  6. why is my Volvo XC90 brake fluid turning brown

    Discover the causes and solutions for brown brake fluid in your Volvo XC90. Follow our step-by-step guide for effective brake system maintenance.

    Brakes5 symptoms

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation