how to fix C0031 code on Honda Civic 10th Generation (2016-2021)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the vehicle to cool if recently driven.

2. Inspect and Repair Wiring

• Sub-step 1: Visually inspect the wiring harness leading to the left front wheel speed sensor. Repair any damaged wires using electrical tape or splice in new wire sections as needed.
• Sub-step 2: Clean the electrical connector with electrical contact cleaner and ensure it is securely connected.

3. Replace Wheel Speed Sensor (if necessary)

• Sub-step 1: Raise the front of the vehicle and secure it on jack stands.
• Sub-step 2: Remove the left front wheel to access the wheel speed sensor.
• Sub-step 3: Disconnect the electrical connector from the wheel speed sensor.
• Sub-step 4: Remove the sensor by unscrewing it from its mounting location (typically one bolt).
• Sub-step 5: Install the new sensor by reversing the removal steps. Ensure it is tightened to the manufacturer’s specified torque.
• Sub-step 6: Reconnect the electrical connector securely.

4. Reassemble and Test

• Sub-step 1: Reinstall the left front wheel and torque the lug nuts to the manufacturer’s specifications.
• Sub-step 2: Lower the vehicle from jack stands.
• Sub-step 3: Reconnect the negative battery terminal.