Replace the EVAP purge valve (also called vapor canister purge valve or VSV) that controls fuel vapor flow from the charcoal canister to the intake manifold.

Warnings

Tools required

Parts

• EVAP purge valve (VSV) × 1 — 25701-37010 or equivalent OEM
• Vacuum hose (if damaged) × 1 — Use OEM specification

Preparation

1. Park vehicle on level ground and engage parking brake
2. Allow engine to cool for at least 30 minutes
3. Open hood and secure with prop rod
4. Disconnect negative battery terminal if you prefer (optional for this job)
5. Locate the EVAP purge valve mounted on the engine intake manifold near the throttle body on the driver's side

Procedure

1. 1

   Disconnect electrical connector
   Press the locking tab on the purge valve electrical connector and pull straight off the valve. If connector is tight, gently wiggle while pulling. Do not pull on the wiring harness itself.
2. 2

   Remove vacuum hose from intake manifold side
   Locate the vacuum hose connecting the purge valve to the intake manifold (upper hose). Squeeze the spring clamp with pliers and slide it back along the hose away from the valve. Pull the hose straight off the valve nipple with a twisting motion. Inspect hose for cracks or damage.
   ℹ️Mark hose orientation with tape if both hoses look identical to avoid mixing them up during reinstallation
3. 3

   Remove vacuum hose from canister side
   Remove the lower vacuum hose connecting the purge valve to the charcoal canister using the same technique. Squeeze spring clamp, slide back, and twist hose off the valve nipple. Inspect this hose as well for damage.
4. 4

   Remove purge valve mounting bolt
   Using a 10mm socket with extension, remove the single mounting bolt securing the purge valve to its bracket on the intake manifold. The bolt is accessed from above. Keep the bolt in a safe place for reinstallation.
   Torque spec

   Mounting Bolts26 Nm (19 lb-ft)
5. 5

   Remove purge valve from bracket
   Pull the purge valve upward and out of the mounting bracket. The valve may be held in place by a clip or tab at the bottom - gently rock the valve while pulling upward if it resists removal.
6. 6

   Inspect and clean mounting area
   Check the mounting bracket for cracks or damage. Wipe away any dirt or debris from the bracket and surrounding area. Inspect both vacuum hose nipples on the intake manifold and canister lines for damage or blockage.
7. 7

   Install new purge valve
   Position the new purge valve into the mounting bracket, ensuring it seats fully into any locating clips or tabs at the bottom. The electrical connector should face toward the front of the engine for easy access.
8. 8

   Install mounting bolt
   Thread the mounting bolt by hand first to ensure proper alignment, then tighten to specification using a 10mm socket and torque wrench. Do not overtighten as the valve body is plastic.
   Torque spec

   Mounting Bolts26 Nm (19 lb-ft)
9. 9

   Reconnect vacuum hoses
   Push the intake manifold vacuum hose (upper) onto the corresponding valve nipple until it bottoms out. Slide the spring clamp back into position approximately 10mm from the end of the nipple. Repeat for the canister hose (lower). Ensure hoses are fully seated and clamps are secure.
   ⚠Verify hoses are connected to correct ports - intake manifold hose typically connects to the port closest to the mounting bracket
10. 10

    Reconnect electrical connector
    Push the electrical connector onto the purge valve until it clicks into place. Tug gently on the connector to verify it is locked. Route the wiring harness away from hot or moving components.

Reassembly

1. Reconnect negative battery terminal if it was disconnected
2. Close hood and ensure all tools are removed from engine bay

Verification

• Start engine and let idle - listen for smooth operation with no vacuum leaks (hissing sounds)
• The purge valve may click intermittently during warm-up - this is normal operation
• Use an OBD-II scanner to clear any stored EVAP codes
• Test drive vehicle through at least one complete drive cycle (cold start, highway driving, idle period)
• Re-scan for codes after drive cycle - verify no EVAP codes return (P0441, P0446, P0455, P1451)
• Check that fuel tank cap seals properly and is not damaged, as this can also cause EVAP codes

More procedures for this vehicle