Replace the PCV (Positive Crankcase Ventilation) valve to restore proper crankcase pressure management and prevent oil consumption or rough idle issues.

Warnings

Tools required

Parts

• PCV Valve × 1 — Toyota 12204-0P010 or equivalent
• PCV Valve Grommet × 1 — Replace if worn or cracked

Preparation

1. Park vehicle on level surface and engage parking brake
2. Allow engine to cool completely if recently operated
3. Open hood and secure with prop rod
4. Locate the PCV valve on the passenger side of the valve cover near the firewall

Procedure

1. 1

   Remove engine cover if equipped
   Some 2012-2017 Camry models have a plastic engine cover. Use 10mm socket to remove the cover bolts if present. Lift cover straight up to disengage any rubber grommets. Set aside.
   Torque spec

   Cover Bolts16 Nm (12 lb-ft)
2. 2

   Locate and access PCV valve
   The PCV valve is mounted in a rubber grommet on the passenger side of the valve cover, near the firewall. It has a vacuum hose connected to it leading to the intake manifold. You may need to move wiring harnesses aside for better access.
   ℹ️Take a photo of the hose routing before removal for reference during reassembly
3. 3

   Disconnect vacuum hose
   Squeeze the hose clamp or release tab (depending on model year) and carefully pull the vacuum hose off the PCV valve nipple. Use needle nose pliers if access is tight. Be gentle to avoid damaging the hose.
   ⚠Inspect the vacuum hose for cracks or brittleness - replace if damaged to prevent vacuum leaks
4. 4

   Remove old PCV valve
   Grip the PCV valve firmly and twist while pulling upward to remove it from the rubber grommet in the valve cover. It may require significant force if it has not been replaced previously. Use a rocking motion if needed.
   ⚠Be careful not to drop the valve or grommet into the engine bay
5. 5

   Inspect and replace grommet
   Remove the rubber grommet from the valve cover and inspect for cracks, hardening, or damage. If the grommet shows any signs of deterioration, replace it with a new one. Clean the valve cover opening with a shop towel.
   ℹ️A damaged grommet will cause oil leaks and vacuum leaks even with a new PCV valve
6. 6

   Install new grommet
   If installing a new grommet, apply a small amount of engine oil to the outer surface to aid installation. Press the grommet firmly into the valve cover opening until it is fully seated and flush with the valve cover surface.
7. 7

   Install new PCV valve
   Insert the new PCV valve into the grommet with a twisting motion. Push down firmly until the valve is fully seated. The valve should be snug but not require excessive force. Hand tighten only - do not use tools to force the valve in.
   Torque spec

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

   Reconnect vacuum hose
   Push the vacuum hose firmly onto the PCV valve nipple until it bottoms out. Ensure the hose clamp or retaining clip is properly secured. Tug gently on the hose to verify it is locked in place.
9. 9

   Reinstall engine cover
   If an engine cover was removed, align the cover over the mounting points and press down to engage rubber grommets. Install and tighten cover bolts to specification using a torque wrench.
   Torque spec

   Cover Bolts16 Nm (12 lb-ft)

Reassembly

1. Double-check that the vacuum hose is securely connected and properly routed
2. Ensure all wiring harnesses moved during the procedure are returned to their original positions
3. Verify the PCV valve is fully seated in the grommet with no gaps

Verification

• Start the engine and listen for any vacuum leaks (hissing sounds) around the PCV valve area
• Check for smooth idle - rough idle may indicate improper installation or a vacuum leak
• Remove the oil filler cap with engine running - you should feel slight suction indicating proper PCV system function
• Inspect the PCV valve area for any oil leaks after running the engine for several minutes
• Verify check engine light does not illuminate after test drive

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