my Skoda Octavia NFL (2020-Present) ABS light is on what could be wrong

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, basic hand tools (sockets, wrenches), brake fluid.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Wheel Speed Sensors

• Sub-steps:
  1. Raise the vehicle and secure it on jack stands.
  2. Remove the wheel to gain access to the wheel speed sensor.
  3. Disconnect the electrical connector of the wheel speed sensor.
  4. Use a multimeter to check the sensor's resistance; replace if it’s out of specification.
  5. If replacing, install the new sensor and reconnect the electrical connector.
  6. Reinstall the wheel and lower the vehicle.

3. Check and Replace ABS Fuse

• Sub-steps:
  1. Locate the fuse box (refer to the owner's manual for specific location).
  2. Identify the ABS fuse and remove it using fuse pullers.
  3. Inspect the fuse; replace it if it is blown.
  4. Reinstall the fuse and ensure it is seated properly.

4. Inspect and Replace Brake Fluid

• Sub-steps:
  1. Locate the brake fluid reservoir; check the level.
  2. If low, top off with manufacturer-recommended brake fluid (DOT 4).
  3. If fluid is contaminated (dark in color), drain the system and replace with new fluid.
  4. Bleed the brakes to remove air from the system.

5. Reconnect Battery and Clear Codes

• Sub-steps:
  1. Reconnect the negative battery terminal.
  2. Use the OBD-II scanner to clear any ABS-related error codes.
  3. Restart the vehicle and check if the ABS light remains off.