EVAP Purge Valve

This procedure covers the removal and replacement of the EVAP purge valve on the 2018-2024 Honda Accord 1.5L Turbo engine, which controls fuel vapor flow from the charcoal canister to the intake manifold.

Warnings

Tools required

Parts

• EVAP purge valve × 1 — Honda 36162-5AA-A02 or equivalent OEM
• Replacement hose clamps (if damaged) × 2 — Use OEM specification

Preparation

1. Park vehicle on level ground and apply parking brake.
2. Turn ignition off and remove key from vehicle.
3. Allow engine to cool completely if recently operated.
4. Open hood and secure with prop rod.
5. Disconnect negative battery terminal and wait 3 minutes to allow system capacitors to discharge.

Procedure

1. 1

   Locate the EVAP purge valve
   The EVAP purge valve is mounted on the driver's side of the engine bay, attached to a bracket near the firewall below the intake manifold. It is a cylindrical solenoid valve with an electrical connector and two vapor hoses attached.
2. 2

   Disconnect electrical connector
   Press the locking tab on the electrical connector and pull straight back to disconnect it from the purge valve. Move the connector aside to provide working clearance.
3. 3

   Release intake side vapor hose
   Using needle-nose pliers, compress the spring clamp on the hose connected to the intake manifold side (upper connection) of the purge valve. Slide the clamp back along the hose at least 25mm (1 inch). Twist and pull the hose off the purge valve nipple. Inspect the hose end for cracks or damage.
4. 4

   Release canister side vapor hose
   Using needle-nose pliers, compress the spring clamp on the hose connected to the EVAP canister side (lower connection) of the purge valve. Slide the clamp back along the hose at least 25mm (1 inch). Twist and pull the hose off the purge valve nipple. Inspect the hose end for cracks or damage.
5. 5

   Remove purge valve mounting bolt
   Using a 10mm socket with extension, remove the single mounting bolt securing the purge valve to its bracket. Keep the bolt for reinstallation if in good condition.
   Torque spec

   Mounting Bolts26 Nm (19 lb-ft)
6. 6

   Remove purge valve from vehicle
   Lift the purge valve up and out of the mounting bracket. Remove the valve from the engine bay and inspect the mounting bracket for damage or corrosion.
7. 7

   Inspect vapor hoses and fittings
   Check both vapor hoses for cracks, brittleness, or deterioration. Verify hose clamps are in good condition with adequate spring tension. Replace any damaged components. Inspect the purge valve nipples on the new valve to ensure they are clean and free of defects.
8. 8

   Install new purge valve into bracket
   Position the new purge valve into the mounting bracket with the electrical connector facing outward for easy access. Align the mounting hole in the valve body with the bracket hole.
9. 9

   Install mounting bolt
   Insert the mounting bolt through the bracket and into the purge valve body. Hand-tighten first to ensure proper thread engagement, then torque to specification using a torque wrench.
   Torque spec

   Mounting Bolts26 Nm (19 lb-ft)
10. 10

    Connect canister side vapor hose
    Push the vapor hose from the EVAP canister (lower connection) firmly onto the purge valve nipple until it seats completely. Slide the spring clamp or hose clamp into position 6-10mm from the end of the nipple. Ensure the clamp is positioned over the hose bead area. If using new clamps, torque worm-drive style clamps to specification.
    Torque spec

    Hose Clamps3 Nm (2 lb-ft)
11. 11

    Connect intake side vapor hose
    Push the vapor hose to the intake manifold (upper connection) firmly onto the purge valve nipple until it seats completely. Slide the spring clamp or hose clamp into position 6-10mm from the end of the nipple. Ensure the clamp is positioned over the hose bead area. Tug on both hoses to verify secure attachment.
    Torque spec

    Hose Clamps3 Nm (2 lb-ft)
12. 12

    Reconnect electrical connector
    Push the electrical connector onto the purge valve solenoid until you hear and feel a positive click indicating the locking tab has engaged. Gently tug on the connector to verify it is locked in place.
13. 13

    Reconnect battery and clear codes
    Reconnect the negative battery terminal. Start the vehicle and allow it to idle. If a check engine light is present, use an OBD-II scanner to clear any stored EVAP system codes related to the purge valve replacement.

Reassembly

1. Ensure all vapor hose connections are secure and clamps are properly positioned.
2. Verify electrical connector is fully seated and locked.
3. Double-check mounting bolt torque specification was met.
4. Confirm no tools or parts were left in the engine bay.

Verification

• Start the engine and listen for unusual hissing or vacuum leaks around the purge valve area.
• Allow the engine to reach operating temperature and verify smooth idle quality.
• Use an OBD-II scanner to verify no EVAP system codes are present (P0441, P0443, P0455, etc.).
• Perform an EVAP system monitor drive cycle if available through the scanner to verify purge valve operation.
• Check for proper purge valve function: at idle the valve should be closed (no flow), and during cruise conditions the valve should open (audible slight click when commanded).

Related trouble codes on this vehicle

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

Chasing one of these codes and not sure which part is guilty? Ask a master mechanic about YOUR car →

More procedures for this vehicle