what does it mean if my Toyota Camry Eighth Generation (2018-present) has a C1201 code?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.
• Raise the vehicle and secure it on jack stands for access to the wheels.

2. Inspect ABS Module and Wiring

• Remove the wheel on the affected corner (if applicable).
• Locate the ABS module and inspect it for physical damage.
• Check wiring harness for continuity using a multimeter.
  • Set the multimeter to the continuity setting.
  • Probe each wire from the ABS module to the BCM; replace any damaged wires.

3. Clean or Replace Wheel Speed Sensors

• If the sensors are dirty, clean them using brake cleaner and a soft cloth.
• If a sensor is damaged, replace it:
  • Disconnect the sensor's electrical connector.
  • Remove the mounting bolt and gently pull out the sensor.
  • Install the new sensor and tighten the bolt to the manufacturer's specified torque.

4. Refill and Bleed Brake System (if necessary)

• If brake fluid was low, refill it with the recommended DOT fluid.
• Bleed the brake system to remove any air:
  • Start at the furthest brake line from the master cylinder.
  • Have an assistant pump the brake pedal while you open and close the bleeder valve on each brake caliper.

5. Reconnect Battery and Clear Codes

• Reconnect the battery terminal.
• Use the OBD-II scanner to clear the C1201 code.
• Start the vehicle and ensure that all warning lights are off.