how to fix C1234 code on Volvo XC60 Second Generation (2018-2024)

• •Check engine light illuminated
• •ABS warning light on the dashboard
• •Unresponsive or inconsistent braking
• •Traction control system malfunction
• •Irregular wheel speed readings during diagnostics

1. 1Scan the vehicle's onboard diagnostics using an OBD-II scanner to confirm the presence of the C1234 code and check for any additional codes.
2. 2Inspect the wheel speed sensors for damage, dirt, or corrosion.
3. 3Check the wiring and connectors associated with the wheel speed sensors for signs of wear or disconnection.
4. 4Measure the resistance of the wheel speed sensors using a multimeter to ensure they are within manufacturer specifications.
5. 5Inspect the ABS module for any visible issues or fault codes that may affect the wheel speed sensor readings.

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

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

• •OBD-II scanner
• •Socket set
• •Multimeter
• •Brake cleaner
• •Soft brush or cloth

• •Wheel speed sensor (if faulty)
• •Electrical connectors (if wiring repair is needed)