how do I diagnose C1234 code on my Honda Pilot YF3 (2016-2022)

Solution

1. Preparation

• Gather tools and parts required.
• Disconnect the vehicle's battery to ensure safety while working on electrical components.

2. Inspect and Clean Wheel Speed Sensors

• Locate the wheel speed sensors at each wheel hub.
• Remove any dirt or debris from the sensor and the surrounding area.
• If damaged, replace the wheel speed sensor with a new one.

3. Check Wiring and Connectors

• Inspect the wiring harness for any signs of wear or damage.
• Repair or replace any damaged wires or connectors.
• Ensure all connections are secure and free from corrosion.

4. Replace ABS Module (if necessary)

• If the ABS module is found to be faulty, remove it by:
  • Disconnecting the electrical connectors from the module.
  • Unbolting the module from its mounting bracket.
  • Installing the new ABS module in reverse order, ensuring all connections are tight.

5. Reconnect Battery and Clear Codes

• Reconnect the vehicle's battery.
• Use the OBD-II scanner to clear the C1234 code and any other related codes.