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Fault code p2440 toyota Tundra 2012

Discussion in '2nd Gen Tundras (2007-2013)' started by Gradysail, May 30, 2017.

  1. May 30, 2017 at 7:13 PM
    #1
    Gradysail

    Gradysail [OP] New Member

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    A few days ago my 2012 Tundra CrewMax TRD SR5 flashed a check eng. light after cranking the second time that day and went into "limp mode". I followed up with the dealer the next day. Over the phone they told me this problem was covered under a special extended 10yr/150k warranty. I took it in They verified the code my ODB-II found which was for a Air Injection System failure and called me later with their bad news: according to them the warranty is only up to 2011 model was covered and after that ONLY the 5.7L engines are covered! I have the 4.6L. Of course I was not happy, especially with the $2200 price tag to repair it. I did not allow them to "fix" it b/c my intention was to take it up with Toyota Customer Care the next day even though they still charged me the hundred dollar diagnostic fee.

    When I got home, I thought "what the heck" might as well use my bluetooth ODB-II device and clear the fault. I did and the check light when off but the traction ctrl light did not. I killed the ignition and restarted and this time no warning lights at all. The truck has been running fine for 2 days now and seems to be fine. The ODB showed all systems normal. Apparently there was either a false positive or it was a temporary glitch with one of the valves. Either way, my advice is if you have this error, make sure the dealer checks the fuses to that system, ask them to reset the fault to see if the component really is "bad" before forking out the mucho dinero. Also, Toyota should cover ALL their cars/trucks with this component system that seems to have issues/glitches and not leave one engine model hanging on an island by itself. The TSB fix on the 5.7s is to "flash" or reset the computer fault but they do not address the 4.6s. I did that on mine and it seems to have cured the problem. The moral of the story is invest in your own ODB device and hold the dealer accountable to their diagnosis...the internet is a wonderful thing.
     
    JTP likes this.
  2. May 30, 2017 at 8:47 PM
    #2
    Wynnded

    Wynnded What MPG...

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    He'll be back.
     
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  3. Jun 2, 2017 at 7:52 AM
    #3
    JTP

    JTP The Big Black Moose

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    Thanks for the info and heads up. Seems to be a lot of this type of "glitch" and lights stuff going on. Especially with the older 1st and early 2nd gen trucks. Was on a road trip these past few days with mine and talked to two different older Tundra owners who both said the same thing. That they were getting a barrage of lights and false indication issues.

    What ODB device do you have?
     
  4. Jun 2, 2017 at 6:59 PM
    #4
    Gradysail

    Gradysail [OP] New Member

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    https://play.google.com/store/apps/details?id=org.prowl.torquefree&hl=en

    It's a relatively inexpensive bluetooth ODB-II that uses this app on your smart phone. I just keep it plugged in and I've had to reset the fault code twice since this started. That get's the truck out of limp mode and it runs normally. This system is just an emissions system and runs only for about the first 1-3 min after start up. I apparently have a clogged or corroded valve b/c it only seems to do it when the humidity is high and the engine has cooled over night. Once it runs and warms up, it's fine. However, today a new development, after some back and forth, Toyota has agreed to cover 80% of the cost to repair...basically I pay some labor and taxes. That makes me feel much better about future purchases seeing as I've been exclusive Toyo since 1993 and have purchased 1 Fourunner, 4 Tacomas, 1 Tundra, 2 Solaras, 1 Lexus, and 1 Highlander over those years. I felt like they needed to step up and they did. Best of luck to the rest of you out there on this issue.
     
    Sunnier, GNTundra and Backslider like this.
  5. Sep 16, 2017 at 7:59 PM
    #5
    crappie4me

    crappie4me New Member

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    New guy here. Got the p2440. Just had the entire secondary system replaced. NOW after every 4th start up I get a P2447. (2nd fan closed) and it goes into limp mode. Currently back in shop and they cannot find anything wrong. All fans, valves, o2 sensors, pressure switches, every component that operates the system is working fine as it should. Any suggestions? ( 2010 tundra )
     
  6. Mar 10, 2018 at 4:58 PM
    #6
    FrozenTundra

    FrozenTundra New Member

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    I just got the p2440 code on my 08 Tundra. Just missed the 10 year window by 25 days so dealer wouldnt fix. I called Toyota and asked if they would authorize the dealer to fix it but they said sorry nothing we can do. I am aware of the limp mode but has any one noticed their truck shifting sort of studdering?
     
  7. Mar 10, 2018 at 5:05 PM
    #7
    ColoradoTJ

    ColoradoTJ I drink…and I know things. Staff Member

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    A metric buttload
    Have you done any updates through Toyota concerning the AIP system?

    If not, you might get lucky with the bypass kits. However, for this to work, I believe you need to have no codes with the AIP.
     
  8. Mar 11, 2018 at 9:10 PM
    #8
    Troynjade

    Troynjade Beast mode 5.7

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    7" procomp lift, 3" body lift. Amp research powerstep, 22" fuel rims, 38" nitto tires, Custom leather seat covers black with red stiching, alpine inz928 deck, 2x10" subs, 1500 watt alpine amp, 400watt amp for door speakers. Procomp Traction bars, fuel grille, Black headlight housing with 6000k hid, rear airbags, rear and front camera, k&n air intake, 40" light bar. Rear under bumper led light bar. Prodigy trailer brakes. 5.29 Nitro Gears. Auburn Posi Rear End. Dirty Deeds Budget Dump.
    Ive had 2 of the AIP's replaced in my 2008, the first one was covered through toyota and the 2nd costed me 2600.00, Im already worried about the 3rd time..
     
  9. Mar 12, 2018 at 3:58 AM
    #9
    Wynnded

    Wynnded What MPG...

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    You could get the by-pass, it's literally plug and play.
     
    Troynjade likes this.
  10. Mar 12, 2018 at 5:27 AM
    #10
    FrozenTundra

    FrozenTundra New Member

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    I will most likely do the bypass but was curious if any one has noticed theier shifting sort of stutter as a result of this code / issue.
     
  11. May 17, 2020 at 6:17 PM
    #11
    Pmoore849

    Pmoore849 New Member

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    I have this code coming up now. Will Toyota honor the warranty if I wasn’t the original owner? I’d that a warranty on the vehicle itself or only for the original owner?
     
  12. Aug 16, 2022 at 5:30 PM
    #12
    Roland

    Roland New Member

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    Hi,
    First time posting here. 2012 4.6L Tundra. Had bank 2 AIP and valve replaced 3 yrs ago. Bank 1 codes started last year. Didn't want to give Toyota any more money for something they should cover for free. Bought a code reader and have been resetting the codes since. Last month two codes switched to permanent. Code reader won't reset codes. Bought the Hewitt bypass kit with the pso options. Easy install but codes are still on ECM and truck still in limp mode. Has anybody had or heard of this condition?
    Please advise.
    Thanks
    Chris
     
  13. Aug 16, 2022 at 5:43 PM
    #13
    Wynnded

    Wynnded What MPG...

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    The permanent codes can't be reset. I have them as well with my Hewitt bypass, installed as a preventative measure. I'm not sure what to say about the limp mode, unless one of the valves is stuck open, which is something that you don't want...if your code is indeed P2440 or one of the other related ones.
     
  14. Aug 17, 2022 at 2:59 AM
    #14
    Roland

    Roland New Member

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    Hi,
    Thanks for the reply. Shouldn't the status of the valves & pumps be a non issue now that they are completely out of the system due to the bypass kit? I don't want to throw any more money at this but limp mode is almost a deal breaker. Do you think replacing the ECM would work to eliminate the permanent codes and get me out of limp mode prison?
    Thanks
    Chris
     
  15. Aug 17, 2022 at 5:08 AM
    #15
    Wynnded

    Wynnded What MPG...

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    Unfortunately no. The valves and pump are still in the system, all that the bypass does is fool the sensors into thinking that conditions are such that it's not necessary to run the pumps and open/close the valves; it also prevents an active CEL, but there will still be permanent codes as you and I both are seeing. If memory serves, I think my codes are for the valves being "stuck closed" as they never open due to installation of the bypass. As mentioned before, it's my understanding that you do not want to run the engine the valve are open. I'm not recalling details (and hopefully someone can chime in) but doing so will damage some pressure sensors or something. Getting a new ECU will not sort this, I suspect that you'll have to focus on those valves and what to replace to get them closed. I've not had to deal with this directly myself, so what I know is limited.
     
  16. Aug 17, 2022 at 6:15 AM
    #16
    Roland

    Roland New Member

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    Thanks.
    I also installed the additional pressure sensors from Hewitt which should have taken the Toyota valves out of the system all together, no?
     
  17. Aug 17, 2022 at 6:41 AM
    #17
    Rsnake69

    Rsnake69 New Member

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    I been getting these codes for the last week. I order the gen 2 bypass kit this morning from Hewitt-tech
     
  18. Aug 17, 2022 at 7:09 AM
    #18
    Roland

    Roland New Member

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    Do you have any permanent codes?
    Did you order the pressure sensor options?
    I didn't at first hoping that the bypass kit would solve the problem but it didn't.
    I just don't understand why, with the pumps and valves out of the system, that I still can't erase the codes! Don't know if I now need to get a new ECM.
     
  19. Aug 17, 2022 at 7:30 AM
    #19
    Rsnake69

    Rsnake69 New Member

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    I have code p2441 p2442. I ordered G22B57H1 gen 2. I will see what happens when I get it put on.
     
  20. Aug 17, 2022 at 10:36 AM
    #20
    Wynnded

    Wynnded What MPG...

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    The codes are permanent.
    The problem is with the open valves, they can allow hot exhaust to an area where they cause damage (they're supposed to close early in the warm up cycle before the gases become too hot). The bypass cannot affect (open/close) the position of the valves themselves. They're really never out of the system (unless physically removed, an option), they're just not activated.
     

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