how to reset C0051 code on Honda Accord 8th Generation (2008-2012)

Honda Accord 9th Generation (2013-2017)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

Error Code: C0051

3 min read

502 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix C0051 ABS issue in Honda Accord 8th Generation. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code

C0051

Affected Component

Brakes

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shorts and shocks.

Symptoms

•ABS warning light illuminated on the dashboard
•Traction control warning light activated
•Erratic ABS performance
•Unusual brake behavior (e.g., pulsation during braking)
•Potential loss of traction control functionality

Diagnostic Steps

1
Use an OBD-II scanner to confirm the C0051 code and check for any additional codes that may provide more context.
2
Inspect the rear wheel speed sensor wiring and connectors for signs of damage, corrosion, or loose connections.
3
Measure the resistance of the rear wheel speed sensor using a multimeter to ensure it falls within the manufacturer’s specified range.
4
Check for any physical obstructions or debris on the sensor or reluctor wheel.
5
Clear the codes using the OBD-II scanner and perform a test drive to see if the code reappears.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

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

Prevention Tips

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

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Socket set
•Wire brush
•Dielectric grease

Parts Required

•Rear wheel speed sensor (if replacement is necessary)
•Electrical connectors (if damaged)

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Diagnostic Steps

1
Use an OBD-II scanner to confirm the C0051 code and check for any additional codes that may provide more context.
2
Inspect the rear wheel speed sensor wiring and connectors for signs of damage, corrosion, or loose connections.
3
Measure the resistance of the rear wheel speed sensor using a multimeter to ensure it falls within the manufacturer’s specified range.
4
Check for any physical obstructions or debris on the sensor or reluctor wheel.
5
Clear the codes using the OBD-II scanner and perform a test drive to see if the code reappears.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Repair the Wheel Speed Sensor

Tools Required: Socket set, multimeter, OBD-II scanner, wire brush, dielectric grease.
Sub-steps:
1. Remove the rear wheel to access the wheel speed sensor.
2. Visually inspect the sensor and wiring. Clean any corrosion with a wire brush.
3. If the wiring is damaged, repair or replace it as necessary.
4. If the sensor is faulty (based on resistance measurements), unscrew the sensor from its mounting location.
5. Install the new or repaired sensor and secure it firmly.

3. Reconnect Battery and Clear Codes

Reconnect the negative battery terminal.
Use the OBD-II scanner to clear the C0051 code from the vehicle’s memory.
Perform a test drive to ensure that the ABS and traction control systems function correctly.

4. Final Inspection

After the test drive, recheck the sensor and wiring for any signs of movement or looseness.
Ensure that there are no new error codes using the OBD-II scanner.