This procedure covers the removal and replacement of the PCV valve on the 2016-2021 Honda Civic 1.5L turbocharged engine, typically located on the intake manifold.

Warnings

Tools required

Parts

• PCV valve × 1 — Honda OEM 17130-5AA-A01 or equivalent
• PCV valve grommet/seal (if damaged) × 1 — Use OEM specification

Preparation

1. Park vehicle on level ground and engage parking brake
2. Allow engine to cool completely if recently operated
3. Open hood and secure with prop rod
4. Locate PCV valve on the intake manifold near the throttle body (driver's side of engine)

Procedure

1. 1

   Remove engine cover if equipped
   If your Civic has a plastic engine cover, lift it straight up to disengage the mounting grommets. Set aside in a clean area.
2. 2

   Locate the PCV valve
   The PCV valve is located on the intake manifold, typically on the driver's side near the throttle body. It will have a hose connected to it leading to the intake system. Trace the hose from the valve cover breather to identify the PCV valve location.
3. 3

   Disconnect the PCV hose
   Carefully disconnect the PCV hose from the valve. The hose may be secured with a clip or simply pressed onto the valve. If using a clip, squeeze it with pliers and slide it back along the hose, then pull the hose straight off. Inspect the hose for cracks or deterioration.
4. 4

   Remove the PCV valve
   Using a 10mm socket or by hand (depending on accessibility), rotate the PCV valve counterclockwise to unthread it from the intake manifold. The valve may be hand-tight or lightly torqued. Pull the valve straight out along with its grommet/seal if attached.
   ℹ️Some oil residue around the valve is normal; excessive oil may indicate a clogged valve or other engine issues
5. 5

   Inspect mounting location and grommet
   Clean the mounting area on the intake manifold with a shop towel. Inspect the rubber grommet/seal for cracks, hardening, or damage. Replace the grommet if it shows signs of deterioration to prevent vacuum leaks.
6. 6

   Install new PCV valve
   If replacing the grommet, install it into the intake manifold first. Insert the new PCV valve into the grommet and thread it clockwise into the mounting location. Thread by hand initially to ensure proper alignment and prevent cross-threading.
   Torque spec

   PCV Valve8 Nm (6 lb-ft)
7. 7

   Torque PCV valve
   Using a torque wrench, tighten the PCV valve to 8.0 Nm (6.0 lb-ft). The specification notes hand-tight is usually acceptable, but verify the valve is secure and properly seated. Do not overtighten as this can damage the plastic valve body or threads.
   Torque spec

   PCV Valve8 Nm (6 lb-ft)
8. 8

   Reconnect PCV hose
   Push the PCV hose firmly onto the new valve until it seats completely. If equipped with a retaining clip, slide it into position over the connection point to secure the hose. Ensure the connection is tight to prevent vacuum leaks.
9. 9

   Reinstall engine cover
   If removed, align the engine cover with the mounting grommets and press down firmly until all mounting points click into place.

Reassembly

1. Double-check that the PCV hose is securely connected and any retaining clips are properly positioned
2. Verify no tools or parts were left in the engine bay
3. Ensure engine cover (if equipped) is properly seated on all mounting grommets

Verification

• Start the engine and allow it to idle for 2-3 minutes
• Listen for any unusual hissing sounds that could indicate a vacuum leak at the PCV valve connection
• Check that idle quality is smooth and stable with no rough running
• Verify no check engine light appears after replacement
• Visually inspect the PCV valve and hose connection for proper seating with engine running

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