what does C1201 mean on my Toyota Camry XV40 (2007-2011) and how to fix it?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a flat surface and the ignition is off.
• Disconnect the negative battery terminal to prevent electric shock.

2. Check ABS Fuse

• Locate the fuse box, typically found under the dashboard or in the engine bay.
• Remove the ABS fuse and inspect it for continuity using a multimeter.
• If the fuse is blown, replace it with a fuse of the same amperage.

3. Inspect Wiring and Connections

• Visually inspect the wiring harness leading to the ABS module for any frays or cuts.
• Disconnect and reconnect all ABS-related connectors to ensure a proper connection.
• If any damage is found, repair or replace the affected wiring or connectors.

4. Test Wheel Speed Sensors

• Locate the wheel speed sensors at each wheel hub.
• Clean any dirt or debris from the sensors and connectors.
• Test each sensor's resistance with a multimeter; typical resistance values should be between 1,000 to 2,500 ohms.
• Replace any wheel speed sensors that are out of specification.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the C1201 code.
• Perform a test drive to ensure the ABS and traction control systems are functioning properly.