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

Secondary air injection system on 2010 Tundra

Discussion in 'General Tundra Discussion' started by BreckTundra, Jun 26, 2025.

  1. Jun 26, 2025 at 10:39 AM
    #1
    BreckTundra

    BreckTundra [OP] New Member

    Joined:
    Jun 26, 2025
    Member:
    #137064
    Messages:
    3
    Gender:
    Male
    First Name:
    Steve
    Vehicle:
    2010 Toyota Tundra TRD Off Road 4.6L
    Remote start
    Posting to this thread too:....HI All. New to this forum for posting, but I have used the threads for help with things in the past. Thanks

    I have been having this issue for over a1 year. Basically I got the CEL and ran the codes. I got P2442 (Secondary Air injection system switching valve stuck open bank 2) and P0418 (Secondary air injection system Control A circuit) It throws up the CEL which was fine for a while, but then if I did not clear the codes, it would put into limp mode. I now have to stop if happens while driving or before and clear the codes, so it comes out of limp mode. I did the research on this and I know replacing the system from dealer cost like $3K or that is what I was quoted. Since it is a 2010 and 160K miles, it is no longer under the warranty or recall. Apparently there was a recall, but it was past the mileage already so they won't honor it. I need some advise because this has become really annoying. Once codes clear, it's fine. I am ok with CEL on, but limp mode is an issue, unless constant CEL on is an issue. I would not be able to replace the pump myself if I bought. Would a non-dealer shop be worth looking into? I had one tell me they wouldn't do it. Is it worth investing in the Bypass kit from Hewitt Tech? https://hewitt-tech.com/product/sec...apAk0L726PF4PU7Oiu2v81CmYvEGUZLX0UAJOeWuRPAny advice is appreciated.

    Any advice is really appreciated. Thanks! Steve
     
  2. Jun 30, 2025 at 6:43 PM
    #2
    Trooper2

    Trooper2 Premium Lone Star Member / SSEM #13

    Joined:
    Feb 7, 2018
    Member:
    #12738
    Messages:
    6,791
    Gender:
    Male
    First Name:
    JR
    Houston, TX (Suburban South)
    Vehicle:
    2019 Tundra 5.7L Crewmax TSS 2WD
    The Hewitt kit is definitely a good option. Not done it myself but have read about others that have. The secondary air pumps are not needed and costly to replace. Hewtt gets good reviews with good customer support too.
     
  3. Jul 1, 2025 at 5:52 PM
    #3
    Rexr

    Rexr New Member

    Joined:
    Nov 2, 2024
    Member:
    #125320
    Messages:
    31
    Gender:
    Male
    First Name:
    Sam
    Bay Area, CA
    Vehicle:
    2018 MGM SR5 CrewMax
    Build Page https://www.tundras.com/threads/stage-1-of-my-build-complete-37s-are-on.157611/#post-3916395
    Bypass kit is a great option since the secondary air injection is only for reducing emissions during start up and cold engine operation. However, if you live in a state like California that does emissions testing you will not pass. So if you live in a state that doesnt test emissions like texas go for it, you will save a lot of money now and in the future if it fails again. If you live in California you have no choice and have to get it fixed :(
     

Products Discussed in

To Top