EVAP Vent Valve

This procedure covers the removal and replacement of the EVAP vent valve on a 2018-2024 Honda Accord with the 1.5L turbocharged engine.

Warnings

Tools required

Parts

• EVAP vent valve × 1 — Use OEM specification

Preparation

1. Park vehicle on a level surface and apply parking brake
2. Place wheel chocks at front wheels
3. Allow engine and exhaust system to cool completely
4. Raise the rear of the vehicle using a jack and support securely on jack stands
5. Ensure adequate lighting and access to the underside of the vehicle

Procedure

1. 1

   Access the EVAP vent valve
   Locate the EVAP vent valve on the driver's side near the fuel tank area. It is mounted to the chassis with a bracket and has electrical and hose connections. You may need to remove a plastic shield or heat shield for better access.
2. 2

   Disconnect electrical connector
   Press the release tab on the electrical connector and pull it straight off the EVAP vent valve. Ensure the connector does not fall or get contaminated with dirt.
3. 3

   Disconnect EVAP hoses
   The vent valve has two hose connections: one from the canister and one fresh air vent line. Press the release tabs or squeeze the quick-connect fittings to disconnect both hoses from the valve. Note the orientation of each hose for reassembly.
4. 4

   Remove mounting bracket bolt
   Remove the 10mm bolt securing the EVAP vent valve bracket to the chassis. Keep the bolt in a safe location for reinstallation.
   Torque spec

   Bracket Bolts19 Nm (14 lb-ft)
5. 5

   Remove EVAP vent valve
   Pull the vent valve and bracket assembly down from the mounting location. Inspect the bracket for damage or corrosion and replace if necessary.
6. 6

   Install new EVAP vent valve
   Position the new EVAP vent valve and bracket assembly into the mounting location on the chassis. Ensure it is properly aligned with the bolt hole and hose routing allows for proper connection.
7. 7

   Install and torque mounting bolt
   Install the 10mm mounting bracket bolt and tighten to specification using a torque wrench. Ensure the valve is secure and does not move.
   Torque spec

   Bracket Bolts19 Nm (14 lb-ft)
8. 8

   Reconnect EVAP hoses
   Push both EVAP hoses firmly onto the vent valve ports until you hear or feel them click into place. Verify each connection by gently pulling on the hoses to ensure they are locked.
9. 9

   Reconnect electrical connector
   Push the electrical connector onto the EVAP vent valve until it clicks securely. Ensure the locking tab is fully engaged.

Reassembly

1. Reinstall any heat shields or plastic covers removed during access
2. Lower the vehicle from jack stands
3. Remove wheel chocks

Verification

• Start the engine and allow it to idle for 2-3 minutes
• Use a scan tool to check for any EVAP system diagnostic trouble codes (DTCs)
• Perform an EVAP system test using a scan tool if available, or drive the vehicle through a complete drive cycle
• Listen for any unusual hissing sounds from the EVAP system that might indicate a vacuum leak
• Verify the check engine light does not illuminate after completing the repair

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

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