EVAP Purge Valve

Replace the EVAP purge valve, which controls the flow of fuel vapors from the charcoal canister to the engine intake manifold for combustion during normal operation.

Warnings

Tools required

Parts

• EVAP purge valve × 1 — Use OEM specification
• Vacuum hose clamps (if damaged) × 2 — Replace as needed

Preparation

1. Park vehicle on level surface and engage parking brake
2. Allow engine to cool completely (minimum 2 hours after operation)
3. Open hood and secure with prop rod
4. Disconnect negative battery terminal to prevent fault codes during connector removal
5. Locate the EVAP purge valve on the driver's side of the engine bay, mounted near the intake manifold

Procedure

1. 1

   Access engine cover removal
   Remove the decorative engine cover by pulling upward firmly on the rear section first, then the front. The cover is secured by rubber grommets on mounting posts. Set aside in a clean area to avoid scratching the finish.
2. 2

   Locate EVAP purge valve
   Identify the EVAP purge valve mounted on the driver's side of the engine compartment, near the intake manifold. It is a cylindrical solenoid valve with two vacuum hose connections and one electrical connector. Note the orientation and routing of hoses before removal.
3. 3

   Disconnect electrical connector
   Press the locking tab on the electrical connector and pull straight away from the purge valve. Do not pull on the wiring harness itself. If connector is tight, gently rock it side-to-side while pulling. Inspect connector terminals for corrosion or damage.
4. 4

   Remove inlet vacuum hose
   Using hose clamp pliers or a flathead screwdriver, release the hose clamp on the inlet hose (from canister side). Slide the clamp back along the hose. Twist the hose gently while pulling to remove it from the valve nipple. If hose is stuck, carefully use a pick tool to break the seal. Plug or cap the hose end to prevent debris entry.
   Torque spec

   Hose Clamps3 Nm (2 lb-ft)
5. 5

   Remove outlet vacuum hose
   Release the hose clamp on the outlet hose (to intake manifold side) using the same method. Remove the hose from the valve nipple, twisting gently to break any seal. Cap this hose end as well. Note any vacuum hose routing clips or guides for reinstallation.
   Torque spec

   Hose Clamps3 Nm (2 lb-ft)
6. 6

   Remove purge valve mounting
   Remove the mounting bracket bolt securing the EVAP purge valve to its bracket using an 8mm or 10mm socket (depending on specific hardware). The valve may be mounted with a single bolt or integrated into a bracket assembly. Support the valve while removing the final fastener.
   Torque spec

   Bracket Bolts21 Nm (16 lb-ft)
7. 7

   Remove old purge valve
   Carefully remove the EVAP purge valve from the engine bay. Inspect the mounting bracket for damage or cracks. Check the vacuum hose nipples on the old valve for any rubber fragments that may have remained in the hoses.
8. 8

   Prepare new purge valve
   Remove the new EVAP purge valve from its packaging. Verify it matches the original valve in connector type, hose nipple size, and mounting configuration. Ensure protective caps are removed from hose nipples before installation.
9. 9

   Install new purge valve
   Position the new purge valve in the mounting bracket, aligning it in the same orientation as the original. Thread the mounting bolt by hand first to ensure proper alignment, then tighten to specification using a torque wrench.
   Torque spec

   Bracket Bolts21 Nm (16 lb-ft)
10. 10

    Connect vacuum hoses
    Install the outlet hose (to intake manifold) onto the appropriate nipple of the new valve, pushing firmly until it seats completely. Position the hose clamp over the connection area and tighten to specification. Repeat for the inlet hose (from canister). Ensure hoses are routed correctly and not kinked or stretched.
    Torque spec

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

    Connect electrical connector
    Align the electrical connector with the purge valve terminals and push firmly until the locking tab clicks into place. Gently tug on the connector to verify it is fully seated and locked.
12. 12

    Reinstall engine cover
    Align the engine cover grommets with the mounting posts on the intake manifold and valve covers. Press down firmly on each corner until all grommets are fully seated. The cover should sit flush without gaps.
13. 13

    Reconnect battery and clear codes
    Reconnect the negative battery terminal. Using an OBD-II scanner, clear any stored EVAP system diagnostic trouble codes. Reset the vehicle's adaptive memory if required by your scan tool.

Reassembly

1. Double-check all vacuum hose connections are secure and properly routed
2. Verify electrical connector is fully locked in place
3. Ensure no tools or parts were left in the engine bay
4. Confirm engine cover is properly seated on all mounting grommets

Verification

• Start the engine and listen for abnormal vacuum leaks or hissing sounds near the purge valve
• Allow engine to reach operating temperature and verify no check engine light illuminates
• Using a scan tool, monitor EVAP purge valve duty cycle during idle and light throttle to confirm proper operation (typically 0% at idle, increasing with engine load)
• Perform an EVAP system monitor drive cycle if available through scan tool to verify system readiness
• Check for fuel vapor odors around the engine bay that would indicate a leak in the system

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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