how to fix Honda Accord 9th Generation (2013-2017) brake pedal going to floor

Honda Accord 10th Generation (2018-2022)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

555 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 the brake pedal going to the floor in a Honda Accord 9th Generation (2013-2017). Step-by-step guide with symptoms and solutions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical systems.
•Allow the vehicle to cool before working on brake components to avoid burns.

Symptoms

•Brake pedal travels to the floor with minimal resistance
•Warning light for the brake system illuminated on the dashboard
•Reduced braking power or spongy brake feel
•Fluid leakage visible under the vehicle near the wheels or master cylinder
•Unusual noises when pressing the brake pedal, such as hissing

Diagnostic Steps

1
Inspect brake fluid level in the master cylinder reservoir.
2
Check for visible leaks around brake lines, connections, calipers, and the master cylinder.
3
Use a brake bleeder kit to check if air is present in the brake lines.
4
Inspect the condition of brake pads and rotors for wear.
5
Test the master cylinder for any internal leaks by applying pressure and observing if the pedal sinks.

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
•Brake bleeder kit
•Torque wrench
•Pliers

Parts Required

•Brake fluid (DOT 3 or DOT 4)
•Master cylinder (if faulty)
•Brake lines (if damaged)

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Symptoms

•Brake pedal travels to the floor with minimal resistance

•Warning light for the brake system illuminated on the dashboard

•Reduced braking power or spongy brake feel

•Fluid leakage visible under the vehicle near the wheels or master cylinder

•Unusual noises when pressing the brake pedal, such as hissing

Diagnostic Steps

1
Inspect brake fluid level in the master cylinder reservoir.
2
Check for visible leaks around brake lines, connections, calipers, and the master cylinder.
3
Use a brake bleeder kit to check if air is present in the brake lines.
4
Inspect the condition of brake pads and rotors for wear.
5
Test the master cylinder for any internal leaks by applying pressure and observing if the pedal sinks.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a flat surface and secure it with wheel chocks.
Wear safety glasses and gloves.

2. Inspect and Repair Leaks

Sub-steps:
1. Remove the wheel to access brake components using a socket set.
2. Inspect brake lines for any cuts or leaks; replace any damaged sections.
3. If fluid is leaking from the master cylinder, remove it by disconnecting the brake lines and unbolting it from the brake booster.
4. Replace the master cylinder with a new one, ensuring to use thread sealant on connections if required.

3. Bleed Brake System

Sub-steps:
1. Refill the master cylinder reservoir with new brake fluid (DOT 3 or DOT 4 as recommended).
2. Starting with the wheel farthest from the master cylinder, have an assistant pump the brake pedal several times and hold it down.
3. Open the bleeder valve on the brake caliper to release air and old fluid; close the valve before the pedal is released.
4. Repeat until no air bubbles are visible in the fluid.
5. Move to the next wheel and repeat the process in the order (farthest to closest).

4. Reassemble and Test

Sub-steps:
1. Reinstall the wheels and torque them to the manufacturer's specifications.
2. Test the brake pedal feel and ensure it’s firm.
3. Conduct a test drive to confirm proper brake function.