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Home/Cars/Volvo/XC90/Second Generation (2015-2024)/what does error code B10C8 mean for my Volvo XC90 Second Generation (2015-2024)?

what does error code B10C8 mean for my Volvo XC90 Second Generation (2015-2024)?

Volvo XC90 Second Generation (2015-2024)

Error Codes
Severity: highDifficulty: mediumError Code: B10C82-4 hours
3 min read
567 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 error code B10C8 related to the front passenger seat sensor in your Volvo XC90. Step-by-step guide included.

Error Code
B10C8
Component
Electrical
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on the airbag system.
  • ⚠Allow the vehicle to sit for at least 10 minutes after disconnecting the battery to ensure airbag capacitors discharge.

Symptoms

  • •Airbag warning light illuminated on the dashboard
  • •Passenger seat airbag status indicator shows off
  • •Unusual behavior in seat adjustment functions
  • •Check engine light may also be illuminated
  • •Inconsistent airbag deployment in crash simulation tests

Diagnostic Steps

  1. 1Scan the vehicle’s computer system using an OBD-II scanner to confirm the presence of code B10C8.
  2. 2Check the status of the front passenger seat occupancy sensor using the vehicle’s diagnostic software.
  3. 3Inspect the wiring and connectors related to the passenger seat sensor for damage or corrosion.
  4. 4Verify the operation of the passenger seat adjustment mechanisms.
  5. 5Perform a visual inspection of the passenger seat cushion for any signs of wear or damage that could affect the sensor.
  6. 6Clear the error code and perform a test drive to see if the code reappears.

Solution

Solution

1. Preparation

  • Tools Required: OBD-II scanner, socket set, multimeter, trim removal tools.
  • Disconnect the vehicle battery to prevent any electrical shorts or accidental airbag deployment.

2. Remove Passenger Seat

  • Sub-steps:
    1. Move the passenger seat to its furthest forward position.
    2. Using the socket set, remove the bolts securing the seat to the floor; there are usually four bolts.
    3. Carefully lift the seat out of the vehicle, ensuring not to damage any wiring harnesses.

3. Inspect and Repair Sensor

  • Sub-steps:
    1. Disconnect the electrical connector for the passenger seat occupancy sensor.
    2. Use a multimeter to test the sensor for continuity and proper resistance values. The specification can be found in the service manual.
    3. If the sensor is faulty, replace it with a new one (ensure it is a genuine Volvo part for compatibility).
    4. If the wiring is damaged, repair or replace the affected wiring harness.

4. Reinstall Seat

  • Sub-steps:
    1. Reconnect the passenger seat occupancy sensor connector.
    2. Carefully place the passenger seat back into the vehicle.
    3. Secure the seat with the bolts removed earlier, tightening them to the manufacturer’s specified torque.
    4. Move the seat to its original position if necessary.

5. Final Steps

  • Reconnect the vehicle battery.
  • Use the OBD-II scanner to clear the error codes.
  • Perform a system check to ensure the airbag system is functioning correctly.

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
  • Socket set
  • Multimeter
  • Trim removal tools

Parts Required

  • Passenger seat occupancy sensor (if faulty)
  • Wiring harness (if damaged)

Additional Information

Error CodeB10C8
Component

Electrical

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

4 items

Parts

2 items

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