1. Welcome to Tundras.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

C1201 After PCV Replacement

Discussion in '2nd Gen Tundras (2007-2013)' started by nick23parker, Mar 17, 2025.

  1. Mar 17, 2025 at 7:12 PM
    #1
    nick23parker

    nick23parker [OP] New Member

    Joined:
    Jan 24, 2023
    Member:
    #90837
    Messages:
    8
    Gender:
    Male
    First Name:
    Nick
    Vehicle:
    2011 Toyota Tundra DC, Radiant Red, 6.5' Bed, 2WD
    Pioneer MVH 1400NEX Head Unit w/ 12" RF Speaker Rear TRD Sway Bar Ranch Echo Camper Shell Bilstein 5100s Front and Rear w/ 1" Rear Block FlowMaster FlowFX Dual Catback Exhausts BFG All-Terrain Tires Pop-A-Lock Tailgate Lock Toyota OEM Tow Mirrors
    2011 4.6L Tundra 2WD
    205,000 miles

    I’ll start with I had no idea how tough the PCV valve was to get to on the 4.6. Not to mention the part is plastic and liable to break when installing.

    The old valve was clogged and not moving and definitely an issue in itself, but after installing the new valve and starting the truck, I immediately get the C1201, P106A, and P0108 codes and the traction control light came on.

    Any help is appreciated. Thanks.
     
    Last edited: Mar 17, 2025
  2. Mar 18, 2025 at 12:38 PM
    #2
    SBGibson

    SBGibson New Member

    Joined:
    Nov 4, 2024
    Member:
    #125386
    Messages:
    35
    Gender:
    Male
    Vehicle:
    2011 Tundra 4 wheel drive
    P106A has to do with your secondary air injection system. One of the valves stuck. Hope it's not that but with the miles
    It could be.
    P0108 , MAP sensor detecting wrong pressure
    . Could be the sensor itself or there is a large vacuum leak somewhere. Might check the hose or hoses around the PCV
    valve you just replaced. I would clear the codes and check too see if they return. I drove around for a month with
    my code reader , fighting the secondary air injection mess. When the engine was cold , the codes would come up
    After cranking first time in the morning. After cranking the codes would appear, I would then wait a minuet and then turn off the engine
    clear the codes and be on my way. The SAI mess is expensive to deal with. Hopefully it may just be a vac leak or a faulty MAP sensor
    causing the other codes to appear. Since the MAP is inline with monitoring the part (PCV) that you replaced, could indicate the problem.
     

Products Discussed in

To Top