what does C1173 code mean for my Honda Pilot Third Generation (2016-present)?

Honda Pilot Third Generation (2016-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

Error Code: C1173

3 min read

572 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 C1173 ABS issue in Honda Pilot Third Generation. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code

C1173

Affected Component

Brakes

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical components.
•Ensure the vehicle is securely supported on jack stands before working underneath.

Symptoms

•ABS warning light illuminated on the dashboard
•Traction control light activated
•Unresponsive or inconsistent ABS function during braking
•Increased stopping distance or brake performance issues
•Possible loss of traction on slippery surfaces

Diagnostic Steps

1
Scan the vehicle's computer with an OBD-II scanner to confirm the C1173 code and check for any additional DTCs.
2
Inspect the left rear wheel speed sensor for physical damage, corrosion, or disconnection.
3
Check the wiring and connectors associated with the left rear wheel speed sensor for shorts, breaks, or corrosion.
4
Measure the resistance of the left rear wheel speed sensor using a multimeter to ensure it falls within the manufacturer's specification.
5
Inspect the ABS module for faults or issues that could be impacting the left rear sensor's functionality.
6
Clear the fault codes and perform a test drive to see if the C1173 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
•Socket set
•Multimeter
•Torque wrench
•Jack and jack stands

Parts Required

•Left rear wheel speed sensor
•Electrical connectors (if needed)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's computer with an OBD-II scanner to confirm the C1173 code and check for any additional DTCs.
2
Inspect the left rear wheel speed sensor for physical damage, corrosion, or disconnection.
3
Check the wiring and connectors associated with the left rear wheel speed sensor for shorts, breaks, or corrosion.
4
Measure the resistance of the left rear wheel speed sensor using a multimeter to ensure it falls within the manufacturer's specification.
5
Inspect the ABS module for faults or issues that could be impacting the left rear sensor's functionality.
6
Clear the fault codes and perform a test drive to see if the C1173 code reappears.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the ignition is off.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Wheel Speed Sensor

Sub-steps:
1. Raise the rear of the vehicle using a jack and secure it on jack stands.
2. Remove the left rear wheel to access the wheel speed sensor.
3. Disconnect the electrical connector from the wheel speed sensor.
4. Remove the sensor mounting bolt using the appropriate socket.
5. Carefully pull out the wheel speed sensor from its housing.
6. Insert the new wheel speed sensor into the housing and secure it with the mounting bolt to the specified torque (typically around 7-9 ft-lbs).
7. Reconnect the electrical connector to the new wheel speed sensor.

3. Inspect and Repair Wiring

Sub-steps:
1. Examine the wiring harness leading to the left rear wheel speed sensor for any signs of damage.
2. If damaged, repair the wiring using solder and heat shrink tubing or replace the damaged section of the harness.
3. Ensure all connections are secure and free of corrosion.

4. Reconnect Battery and Clear Codes

Sub-steps:
1. Reconnect the negative battery terminal.
2. Use the OBD-II scanner to clear any stored fault codes.
3. Start the vehicle and verify that the ABS warning light is off.