what does it mean if my Toyota Camry XV40 (2007-2011) has a C1201 code

Solution

1. Preparation

• Ensure the vehicle is on a flat surface and securely lifted using jack stands.
• Gather necessary tools and parts.

2. Check and Replace ABS Fuse

• Locate the fuse box (refer to the owner’s manual).
• Use a fuse puller to remove the ABS fuse.
• Inspect the fuse for continuity; replace it if blown.
• Reinstall the fuse and check if the C1201 code persists.

3. Inspect and Clean Wheel Speed Sensors

• Remove the wheel to access the wheel speed sensors.
• Disconnect the sensor wiring harness.
• Clean the sensor and mounting area to remove debris.
• Reconnect the sensor and repeat for all four wheels.

4. Test Wheel Speed Sensor Outputs

• Using a multimeter, check the resistance of each wheel speed sensor (typically between 1,000 - 2,000 ohms).
• Spin the wheels to ensure there is a signal output from the sensors.
• Replace any faulty sensors as needed.

5. Check ABS Module Connections

• Inspect the ABS module wiring harness for loose connections.
• Disconnect and reconnect the ABS module to ensure a secure fit.
• Clear the error codes using the OBD-II scanner and perform a test drive.

6. Brake Fluid Inspection

• Check the brake fluid reservoir; ensure it is at the correct level.
• Inspect brake lines for leaks or damage.
• Replace any damaged lines and refill with manufacturer-recommended brake fluid.