how to diagnose C0035 code in Volkswagen Passat B8 (2015-2022)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Wheel Speed Sensor

1. Remove the Wheel:

   • Loosen the lug nuts slightly before lifting the vehicle.
   • Use a jack to raise the vehicle and secure it with jack stands.
   • Remove the wheel completely.

2. Access the Wheel Speed Sensor:

   • Locate the left front wheel speed sensor on the hub assembly.
   • Disconnect the electrical connector from the sensor.

3. Remove the Old Sensor:

   • Unscrew the retaining bolt (if applicable) using a socket set.
   • Carefully pull the sensor out of its mounting hole.

4. Install the New Sensor:

   • Insert the new wheel speed sensor into the mounting hole.
   • Secure it with the retaining bolt and tighten to the manufacturer's torque specifications (usually around 10-15 Nm).
   • Reconnect the electrical connector, ensuring it clicks into place.

3. Reassemble and Test

1. Reinstall the Wheel:

   • Place the wheel back onto the hub and hand-tighten the lug nuts.
   • Lower the vehicle and fully tighten the lug nuts to the manufacturer's torque specifications (typically 100-120 Nm).

2. Reconnect Battery and Test:

   • Reconnect the negative terminal of the battery.
   • Start the vehicle and check for any warning lights on the dashboard.
   • Perform a road test to confirm the repair and ensure the ABS and traction control systems function correctly.