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Home/Cars/Honda/Accord/10th Generation (2018-2022)/how to fix P0455 code in Honda Accord 9th Generation (2013-2017)

how to fix P0455 code in Honda Accord 9th Generation (2013-2017)

Honda Accord 10th Generation (2018-2022)

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

Problem Statement

Learn how to diagnose and fix P0455 fuel system issue in Honda Accord 9th 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.
  • ⚠Allow the engine to cool before starting any repairs to prevent burns.

Symptoms

  • •Check engine light illuminated
  • •Fuel odor near the vehicle
  • •Poor fuel economy
  • •Rough idle or stalling
  • •Failed emissions test

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to confirm the P0455 code and check for any related codes.
  2. 2Inspect the gas cap for cracks, damage, or improper sealing, and ensure it is tightened properly.
  3. 3Visually inspect the EVAP system components, including hoses and connections, for signs of damage or wear.
  4. 4Perform a smoke test on the EVAP system to identify any leaks.
  5. 5Check the EVAP purge valve for proper operation using a multimeter.
  6. 6Inspect the fuel tank and filler neck for signs of cracks or damage.

Solution

Solution

1. Preparation

  • Gather all necessary tools and parts.
  • Disconnect the vehicle battery to prevent electrical issues during repair.
  • Ensure the vehicle is on a flat surface and properly secured.

2. Inspect and Replace the Gas Cap

  • Tools Required: None
  • Remove the gas cap and inspect it for any visible damage. Replace it if damaged.
  • Reinstall the gas cap securely and ensure it clicks into place.

3. Repair or Replace Damaged EVAP Hoses

  • Tools Required: Socket set, pliers, hose clamps
  • Locate any damaged EVAP hoses during the visual inspection.
  • Use pliers to loosen the clamps, then remove the damaged hoses.
  • Cut new hoses to the appropriate length and install them, securing with hose clamps.

4. Replace the EVAP Purge Valve (if faulty)

  • Tools Required: Socket set, multimeter
  • Disconnect the electrical connector from the EVAP purge valve.
  • Use a multimeter to test the valve for proper resistance (consult service manual for specifications).
  • If the valve is faulty, remove it using a socket set and install the new purge valve, reconnecting the electrical connector.

5. Perform a Smoke Test (if leaks found)

  • Tools Required: Smoke machine
  • Connect the smoke machine to the EVAP system through the service port.
  • Activate the machine and observe for smoke escaping from any leaks.
  • Repair any identified leaks by replacing components as necessary.

6. Clear Codes and Reconnect Battery

  • Reconnect the vehicle battery.
  • Use the OBD-II scanner to clear the P0455 code.
  • Start the engine and allow it to run for a few minutes to monitor for any reoccurrence of the code.

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
  • •Multimeter
  • •Socket set
  • •Pliers
  • •Smoke machine

Parts Required

  • •Replacement gas cap (if damaged)
  • •Replacement EVAP hoses (if damaged)
  • •Replacement EVAP purge valve (if faulty)

Additional Information

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

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