what does the C1201 code mean on my Toyota Corolla E170 (2013-2019)?

Solution

1. Preparation

• Gather tools and materials.
• Ensure the vehicle is parked on a level surface and safely secured with wheel chocks.

2. Check and Refill Brake Fluid

• Step 1: Open the hood and locate the brake fluid reservoir.
• Step 2: Inspect the fluid level; if low, top off with the manufacturer-recommended brake fluid (DOT 3 or DOT 4).
• Step 3: Close the reservoir cap securely.

3. Repair or Replace Faulty Components

• Step 1: If any wiring or connectors are damaged, repair or replace them as needed.
• Step 2: If the ABS module is faulty, replace it following these detailed steps:
  • a. Disconnect the negative battery terminal.
  • b. Remove any necessary covers to access the ABS module.
  • c. Disconnect the electrical connectors from the module.
  • d. Unbolt and remove the ABS module from its mounting.
  • e. Install the new ABS module and reconnect the electrical connectors.
  • f. Reinstall any covers removed.

4. Clear Error Codes

• Step 1: Reconnect the negative battery terminal.
• Step 2: Use the OBD-II scanner to clear the C1201 code and any related codes.

5. Test Drive

• Step 1: Take the vehicle for a test drive to ensure proper functionality of the brakes and confirm that no warning lights are illuminated.