FAULTBASE
Error CodesASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Honda/Accord/11th Gen (2023-Present)/how to fix P0455 code on my Honda Civic 11th Generation (2022-Present)?

how to fix P0455 code on my Honda Civic 11th Generation (2022-Present)?

Honda Accord 11th Gen (2023-Present)

Error Codes
Severity: mediumDifficulty: mediumError Code: P04552-4 hours
3 min read
502 words

Problem Statement

Learn how to diagnose and fix P0455 large evaporative emissions system leak in Honda Civic 11th Generation. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0455
Affected Component
Fuel System
Estimated Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Ensure the vehicle is cool before working on any components near the engine.

Symptoms

  • •Check engine light illuminated
  • •Fuel odor near the vehicle
  • •Poor fuel economy
  • •Failed emissions test
  • •Increased emissions

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to confirm P0455 and check for any additional codes.
  2. 2Inspect the gas cap for cracks, damage, or improper sealing.
  3. 3Visually inspect the EVAP system hoses and connections for signs of wear, cracks, or loose fittings.
  4. 4Check the EVAP canister for any signs of damage or blockage.
  5. 5Perform a smoke test on the EVAP system to locate any leaks.

Solution

Solution

1. Preparation

  • Gather tools and parts required for repair.
  • Ensure the vehicle is parked on a flat surface and the engine is off.
  • Disconnect the battery negative terminal to avoid any electrical issues.

2. Inspect and Replace Gas Cap

  • Sub-steps:
    1. Remove the gas cap.
    2. Inspect for cracks, dirt, or damage.
    3. If damaged, replace the gas cap with a new one.
    4. Reinstall the gas cap securely.

3. Inspect and Replace EVAP Hoses

  • Sub-steps:
    1. Locate the EVAP hoses connected to the canister and fuel tank.
    2. Check for cracks or signs of wear.
    3. If any hose is damaged, remove the old hose using a hose clamp tool.
    4. Install the new EVAP hose and secure it with the appropriate clamps.

4. Inspect and Replace EVAP Canister (if necessary)

  • Sub-steps:
    1. Locate the EVAP canister.
    2. Remove any mounting bolts using a socket set.
    3. Disconnect the electrical connector and any hoses attached to the canister.
    4. Install the new canister by reversing the removal steps, ensuring all connections are secure.

5. Reconnect Battery and Clear Codes

  • Sub-steps:
    1. Reconnect the battery negative terminal.
    2. Use the OBD-II scanner to clear the P0455 code.
    3. Start the engine and allow it to reach operating temperature.

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
  • •Hose clamp tool
  • •Screwdrivers

Parts Required

  • •New gas cap (if necessary)
  • •EVAP hoses (if necessary)
  • •EVAP canister (if necessary)

Additional Information

Error Code
P0455
Affected Component
Fuel System
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
4 items
Parts Required
3 items

Related Faults

  1. my Honda Civic 11th Generation (2022-Present) is leaking oil, what should I check?

    Learn how to diagnose and fix oil leaks in the 2022 Honda Civic. Step-by-step guide with diagnostic procedures and repair instructions.

    Engine6 symptoms
  2. why is my Honda Civic 11th Generation (2022-Present) making a ticking noise when I accelerate

    Learn how to diagnose and fix ticking noise during acceleration in Honda Civic 11th Generation. Step-by-step guide with diagnostic procedures and repair instructions.

    Engine5 symptoms
  3. how to check for power steering pump failure in Honda Accord 10th Generation (2018-2022)

    Learn how to diagnose and fix power steering pump failure in Honda Accord (2018-2022). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Steering6 symptoms
  4. my Honda Civic 11th Generation (2022-Present) transmission jerks when shifting gears

    Learn how to diagnose and fix transmission jerking in the 2022 Honda Civic. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Transmission5 symptoms
  5. why does my Honda Civic 11th Generation (2022-Present) transmission jerk when shifting

    Learn how to diagnose and fix transmission jerking in the 2022 Honda Civic. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Transmission5 symptoms
  6. how to fix Honda Civic 11th Generation (2022-Present) that shudders during acceleration

    Learn how to diagnose and fix shuddering during acceleration in Honda Civic 11th Generation. Step-by-step guide with diagnostic procedures and repair instructions.

    Engine5 symptoms

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation