how to fix C1231 code on Honda Accord 8th Generation (2008-2012) ABS module

Learn how to diagnose and fix C1231 code in Honda Accord 8th Generation ABS module. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather all necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the negative battery terminal to avoid electrical shorts.

2. Inspect and Clean Wheel Speed Sensors

• Tools Required: Ratchet and socket set, cleaning solution, soft cloth
• Locate each wheel speed sensor on the wheel hub assembly.
• Remove the mounting bolts securing the sensors.
• Carefully pull the sensors out and clean them using a soft cloth and cleaning solution.
• Reinstall the sensors and tighten bolts to manufacturer specifications (usually around 7-10 ft-lbs).

3. Check and Repair Wiring

• Tools Required: Multimeter, wire strippers, soldering iron (if necessary)
• Inspect the wiring harness connected to the wheel speed sensors for any frays or breaks.
• If any wiring is damaged, strip the ends of the wires and splice in new wire using solder or crimp connectors.
• Ensure all connections are secure and insulated to prevent short circuits.

4. Replace Wheel Speed Sensors (if necessary)

• Tools Required: Ratchet and socket set, torque wrench
• If the sensors are faulty based on resistance measurements, procure new wheel speed sensors.
• Remove the old sensors and install new ones in the same location.
• Torque the mounting bolts to the manufacturer's specifications.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use an OBD-II scanner to clear any diagnostic trouble codes stored in the ABS module.
• Perform a test drive to ensure that the ABS system is functioning correctly.