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2012 tundra Error codes 2440/41

Discussion in '2nd Gen Tundras (2007-2013)' started by MyTundraToy, Apr 25, 2023.

  1. Apr 25, 2023 at 7:19 PM
    #1
    MyTundraToy

    MyTundraToy [OP] New Member

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    Toyota Tundra 2012 V8 4.6
    Had a scan at Autozone and with my FIXD device and got same error codes 2440/41 . I have 2012 Toyota tundra 4.6l OE scan Recommends both Secondary Air Injection Pump Bank#1, Bank#2, and Secondary Air Injection Check Valves Bank# 1, Bank#2. Is this accurate? Anyone know. Do i need OE parts? Help? Veh fumes smells & stalls 70 mph
     
  2. Apr 25, 2023 at 8:03 PM
    #2
    B.Ross

    B.Ross New Member

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    Southern Utah
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    2012 TForce CrewMax 4wd
  3. May 2, 2023 at 5:51 PM
    #3
    Lead Foot

    Lead Foot 2007 DC 4.7L 4X2

    Joined:
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    Jim
    Indiana
    Vehicle:
    2007 SR5 Double Cab Black 4.7 4X2
    I did the bypass on my 2007 DC 4.7l. Well worth the money and time. Fairly easy install.
     
  4. May 5, 2023 at 5:46 AM
    #4
    Monkey2583

    Monkey2583 New Member

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    Brian
    Vehicle:
    08 silver Tundra crew max 5.7
    Just led taillights and smoked headlights
    Or you can spend 1,500 like I did and replace it all . Haven't had a problem sense and I did the repairs myself .
     
  5. Aug 25, 2023 at 5:06 PM
    #5
    Bam1971

    Bam1971 New Member

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    #102755
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    2011 Toyota Tundra 4.6
    I have a 2011 Tundra 4.6 had issues with pumps and switching values. codes thrown were Po415 &P1604 So I just had the Gen 2 Hewitt tech bypass kit installed and now I have new codes.... P2443 and P2447 and truck is in limp mode. Does anyone else have this issue????? I'm so frustrated.
     
  6. Aug 27, 2023 at 3:35 PM
    #6
    Monkey2583

    Monkey2583 New Member

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    Messages:
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    Gender:
    Male
    First Name:
    Brian
    Vehicle:
    08 silver Tundra crew max 5.7
    Just led taillights and smoked headlights
    Have you cleared the codes and how fast do they come back .
     
  7. Aug 27, 2023 at 4:18 PM
    #7
    Bam1971

    Bam1971 New Member

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    2011 Toyota Tundra 4.6
    I did clear the codes yesterday, but I have not driven it yet since. I am taking it back to the mechanic tomorrow. He told me the install directions called for clearing out codes prior to installing the bypass. He did that. The problem is these are new codes after installation. The original codes are gone at the moment. Important to note it was driven about 20 miles after install then the engine light came on, truck went in limp mode.
     
  8. Sep 25, 2023 at 7:11 PM
    #8
    Orions Dad

    Orions Dad New Member

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    We’re the block off plates installed?
     

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