why is my Honda Accord 10th Generation (2018-2022) brake pedal going to the floor

Solution

1. Preparation

• Gather tools: socket set, brake fluid, brake line wrench, OBD-II scanner, and a multimeter.
• Ensure the vehicle is parked on a level surface and engage the parking brake.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Repair Brake Lines

• Sub-step 1: Visually inspect all brake lines and hoses for cracks, leaks, or corrosion.
• Sub-step 2: If any leaks are detected, replace the damaged brake line or hose using a brake line wrench.
• Sub-step 3: Bleed the brake system after replacement to remove air bubbles using the brake bleeder tool.

3. Replace Brake Fluid

• Sub-step 1: If the brake fluid is low or contaminated, remove the master cylinder cap and siphon out old fluid.
• Sub-step 2: Refill with the manufacturer-recommended brake fluid (usually DOT 3 or DOT 4).
• Sub-step 3: Bleed the brake system to ensure new fluid reaches all components.

4. Replace Master Cylinder (if necessary)

• Sub-step 1: If the master cylinder is faulty, unbolt it from the brake booster and disconnect the brake lines.
• Sub-step 2: Install the new master cylinder, tightening bolts to the manufacturer's torque specifications (typically around 15-20 ft-lbs).
• Sub-step 3: Reconnect brake lines and check for leaks.

5. Final Assembly

• Sub-step 1: Reattach the negative battery terminal.
• Sub-step 2: Press the brake pedal several times to ensure it firms up.
• Sub-step 3: Test the brakes before driving the vehicle to ensure proper operation.