my Honda CR-V’s check engine light is on with code C0031, what should I do?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a flat surface with the engine off.
• Disconnect the negative battery terminal to avoid electrical shorts.

2. Inspect and Replace Wheel Speed Sensor

• Tools Required: Socket set, torque wrench, multimeter.
• Sub-steps:
  1. Remove the left front wheel using a socket set.
  2. Locate the wheel speed sensor, typically mounted on the brake caliper or hub assembly.
  3. Disconnect the electrical connector from the wheel speed sensor.
  4. Remove the mounting bolt(s) securing the sensor using a socket set.
  5. Carefully pull the sensor out of its housing and inspect the O-ring for wear.
  6. Install the new wheel speed sensor into the housing, ensuring it is seated properly.
  7. Reinstall the mounting bolt(s) and torque them to the manufacturer's specifications (generally around 10-15 ft-lbs).
  8. Reconnect the electrical connector to the new sensor.

3. Verify and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the fault codes.
• Start the engine and check if the check engine light remains off.