how to diagnose C1231 error code in Honda Accord 9th Generation (2013-2017)

• •ABS warning light illuminated on the dashboard
• •Unresponsive brakes during hard braking
• •Pulsating brake pedal while braking
• •Increased stopping distance or brake performance degradation
• •Vehicle traction control light may also be illuminated

1. 1Connect an OBD-II scanner to the vehicle's diagnostic port and retrieve the error codes.
2. 2Inspect the ABS wheel speed sensors at each wheel for any physical damage, dirt, or debris.
3. 3Check the wiring and connectors associated with the wheel speed sensors for fraying, corrosion, or loose connections.
4. 4Measure the resistance of each wheel speed sensor using a multimeter; compare readings to specifications in the service manual.
5. 5Inspect the ABS control module for any fault codes that may provide additional context regarding the C1231 error.
6. 6Perform a visual inspection of the ABS module's wiring harness for any signs of damage or short-circuits.

After completing the repair, verify that the issue has been resolved:

• ✓Test the affected component to ensure it functions correctly
• ✓Check for any error codes or warning lights
• ✓Monitor the vehicle for a few days to ensure the issue does not recur

To prevent this issue from occurring again:

• •Follow the manufacturer's recommended maintenance schedule
• •Address warning signs early before they develop into major issues
• •Use quality parts and fluids recommended for your vehicle
• •Keep detailed records of all repairs and maintenance

• •OBD-II scanner
• •Multimeter
• •Socket set
• •Cleaning brush
• •Brake cleaner
• •Electrical contact cleaner

• •Wheel speed sensor (if defective)
• •Electrical connectors (if damaged)