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

Honda Accord 10th Generation (2018-2022)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

4 min read

665 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 a brake pedal that goes to the floor in a 2013-2017 Honda Accord. Step-by-step guide with tools and safety tips.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the brake components to cool before handling.

Symptoms

•Brake pedal feels spongy or goes to the floor when pressed
•Warning lights on the dashboard (e.g., brake warning light)
•Reduced braking efficiency or longer stopping distances
•Brake fluid leak under the vehicle
•Unusual noises when pressing the brake pedal (e.g., grinding or squeaking)

Diagnostic Steps

1
Inspect the brake fluid level in the master cylinder reservoir.
2
Check for visible leaks in the brake lines, brake hoses, and around the brake calipers.
3
Examine the brake pads and rotors for wear and damage.
4
Perform a brake fluid pressure test using a brake pressure gauge.
5
Scan the vehicle’s computer system for any brake-related error codes using an OBD-II scanner.

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

•Jack stands
•Socket set
•Brake fluid
•Brake pressure gauge
•OBD-II scanner

Parts Required

•Brake fluid (DOT 3 or DOT 4)
•Brake lines (if necessary)
•Brake calipers (if necessary)

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Diagnostic Steps

1
Inspect the brake fluid level in the master cylinder reservoir.
2
Check for visible leaks in the brake lines, brake hoses, and around the brake calipers.
3
Examine the brake pads and rotors for wear and damage.
4
Perform a brake fluid pressure test using a brake pressure gauge.
5
Scan the vehicle’s computer system for any brake-related error codes using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the ignition is off.
Tools Required: Jack stands, socket set, brake fluid, brake pressure gauge, OBD-II scanner.

2. Inspect and Replace Brake Fluid

Open the hood and locate the brake master cylinder.
Remove the cap and check the brake fluid level. If low, fill with the correct type of brake fluid (DOT 3 or DOT 4).
If the fluid is dirty or contaminated, proceed to replace it.
- Sub-steps:
  1. Use a turkey baster to remove old brake fluid from the master cylinder.
  2. Refill with new brake fluid up to the "FULL" mark.
  3. Bleed the brake lines using the following steps (if air is present):
    - Start with the wheel farthest from the master cylinder (usually the right rear).
    - Attach a clear tube to the bleeder valve and place the other end in a container.
    - Have an assistant pump the brake pedal several times and hold it down.
    - Open the bleeder valve to release air and fluid, then close it before your assistant releases the pedal.
    - Repeat until no air bubbles are visible in the fluid.

3. Inspect and Replace Brake Lines

Check for any damaged or corroded brake lines.
- Sub-steps:
  1. If damage is found, use a line cutter to remove the affected section.
  2. Replace with new brake line tubing, using flaring tools to create connections.
  3. Secure with appropriate brackets and fittings.

4. Inspect and Replace Brake Calipers

If leaks or damage are identified in the brake calipers, they may need to be replaced.
- Sub-steps:
  1. Lift the vehicle and remove the wheel.
  2. Disconnect the brake line from the caliper using a wrench.
  3. Remove the caliper mounting bolts and slide the caliper off the rotor.
  4. Install the new caliper by reversing the removal steps and ensure to bleed the brakes afterwards.

5. Reassemble and Test

Reassemble any components removed during the repair.
Lower the vehicle and test the brake pedal for firmness.
Safety Warnings: Ensure the vehicle is securely supported on jack stands while working underneath.