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P2440 Code

Discussion in 'General Tundra Discussion' started by Arts1toytun, May 31, 2022.

  1. May 31, 2022 at 7:50 AM
    #1
    Arts1toytun

    Arts1toytun [OP] New Member

    Joined:
    May 30, 2022
    Member:
    #78964
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    First Name:
    Art
    Vehicle:
    2008 Toyota Tundra
    My 2008 Toyota Tundra has 88333 miles. Drive it occasionally, a week at a time every 2 months. Haven't driven it for about 4 months this time. Started it up and the "VSC Off" light was flashing and the "Slip Indicator Light" was on and the "Check Engine Light" as well. I drove it for about 2 hours and nothing changed. Connected the OBD II reader and got the P2440 code plus "Sec.Air Inj.System Switching Vlv Stuck Bank 1."

    I tried several options to clear the the "VSC Off" message but none worked. I read up about the valve sticking and watched some YouTube videos. My questions are these:

    1) Does all this mean my ECM Module is bad since all this happened at the same time?
    2) Would the stuck valve give all these indicators?
    3) If so, can the valve be repaired, or do I have to buy a new one?

    Thank you.
     
  2. May 31, 2022 at 2:43 PM
    #2
    Trooper2

    Trooper2 Premium Lone Star Member / SSEM #13

    Joined:
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    JR
    Houston, TX (Suburban South)
    Vehicle:
    2019 Tundra 5.7L Crewmax TSS 2WD
    Not sure your ECM is bad if you can start and drive your truck. Seems it wouldn't run or very well at least.

    Not sure what all codes or indicators the valve failure causes.

    The valve can be replaced but is quite a job and fairly expensive to get done. The valve is not technically needed for the engine to run, its part of the emissions system. There are kits available to bypass the valve(s) which will allow the engine to run as needed. The kits consists of an electrical harness and some blocking plates for the exhaust manifold. The kits are a fraction of the cost.
    Search the site or the web for the kits. Lots of info.

    Good luck!
     
  3. May 31, 2022 at 6:01 PM
    #3
    Arts1toytun

    Arts1toytun [OP] New Member

    Joined:
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    5
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    Male
    First Name:
    Art
    Vehicle:
    2008 Toyota Tundra
    Thank you. That seems to be where I am headed. Is Hewitt the only one that sells them?
     
  4. May 31, 2022 at 6:35 PM
    #4
    Trooper2

    Trooper2 Premium Lone Star Member / SSEM #13

    Joined:
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    6,777
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    Male
    First Name:
    JR
    Houston, TX (Suburban South)
    Vehicle:
    2019 Tundra 5.7L Crewmax TSS 2WD
    They are the only one I can name, seem to be very reputable with great customer/tech support.
    I have probably heard of another 1 or 2 but couldn't repeat their name.
     
  5. Jun 2, 2022 at 10:38 AM
    #5
    Acedude

    Acedude New Member

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    Colorado Plateau
    Vehicle:
    2019 Sequoia SR5 4WD
    RCI aluminum front skid, Timbren rear bumpstops, Carhartt seat covers and cargo area cover, Weathertech floorliners, Hewitt SAIP bypass, genuinecoolingsystems trans cooler, Lexus front diff fill/drain plugs
    Email jeffcolemaps@gmail.com. He builds bypass kits and is a Pro. I've been running his bypass kits on 4.7l's for about 300k miles.
     

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