PCV Valve

Replacement of the PCV valve on the 2018-2024 Honda Accord 1.5L turbo engine to restore proper crankcase ventilation and prevent oil consumption issues.

Warnings

Tools required

Parts

• PCV valve × 1 — 17130-5AA-A01 or equivalent
• PCV valve O-ring/grommet (if separate) × 1 — Check with OEM parts diagram

Preparation

1. Park vehicle on level ground and engage parking brake
2. Turn off engine and allow to cool for at least 30 minutes
3. Open hood and secure with prop rod
4. Remove engine cover by pulling upward on front clips and lifting away
5. Locate PCV valve on the intake manifold (typically on driver side near turbocharger intake)

Procedure

1. 1

   Disconnect PCV hose from valve
   Using pliers, squeeze the hose clamp on the PCV hose connected to the PCV valve and slide it back along the hose. Gently twist and pull the hose off the PCV valve nipple. If the hose is stuck, use a flathead screwdriver to carefully work it free. Be prepared for minor oil vapor residue.
2. 2

   Remove PCV valve from intake manifold
   Grasp the PCV valve firmly and rotate counterclockwise while pulling gently outward. The valve threads into a grommet or directly into the intake manifold. On some variants, a 10mm socket may be needed if the valve has a hex base. Remove the valve completely from the manifold.
3. 3

   Inspect PCV valve grommet
   Examine the rubber grommet or O-ring that seals the PCV valve to the intake manifold. Check for cracks, hardening, or deterioration. If damaged or the valve was difficult to remove, replace the grommet. Remove old grommet with a pick tool if necessary and install new one by pressing firmly into the manifold bore until fully seated.
4. 4

   Install new PCV valve
   Lightly lubricate the O-ring on the new PCV valve with clean engine oil. Insert the valve into the grommet or manifold bore and rotate clockwise while applying gentle inward pressure. Thread the valve in by hand until it seats firmly. Do not force or cross-thread.
   ⚠Over-tightening can crack the plastic intake manifold or damage the valve threads. Hand-tight plus 1/8 turn is typically sufficient.
   Torque spec

   PCV Valve8 Nm (6 lb-ft)
5. 5

   Reconnect PCV hose
   Push the PCV hose firmly onto the PCV valve nipple until it bottoms out. Slide the hose clamp back into position over the connection point and release to secure. Ensure the hose is fully seated and the clamp is positioned correctly to prevent vacuum leaks.
6. 6

   Reinstall engine cover
   Position the engine cover over the engine and align the mounting grommets with the studs. Press down firmly on each mounting point until all clips engage with an audible click.

Reassembly

1. Verify all hose connections are secure and clamps are properly positioned
2. Ensure no tools or rags were left in the engine bay
3. Confirm engine cover is fully seated on all mounting points

Verification

• Start the engine and listen for any hissing sounds indicating vacuum leaks around the PCV valve area
• Allow engine to idle for 2-3 minutes and verify smooth idle with no rough running
• Rev engine gently to 2500-3000 RPM and confirm no abnormal noises or oil leaks from PCV valve
• Check for diagnostic trouble codes (DTCs) related to fuel trim or vacuum leaks using an OBD-II scanner
• Verify no oil residue is accumulating around the PCV valve connection after a short test drive

More procedures for this vehicle