06 4.7L - Error code P2440 and VSC trac light warning

[rikclark]

Two questions:

1. Has anyone had experience RECENTLY with air induction pump bypass kits to clear Error code P2440?
2. Is the issue with VSC trac light warning lights on related to air pump issue?

Have done a lot of research on both issues that I am having with my 06 4.7 and now a bit confused about what approach I should take to fix the problem short of replacing air pump.

This is a know issue with this engine and 5.7L. Toyota extended the warranty for this part to 150K mi on Tundra and Sequoia but not 4Runner.

 

[srs034runner]

I'd only be concerned with the p2440 code, the vsc trac lights come on regardless what code you have, kinda funky in my opinion lol ... Last time my car had a cat bank one code (dreaded cracked manifold lol) the trac lights came on and stayed on till I could do a full fzc (fail zero cal)... Fun stuff lol

Two questions:

1. Has anyone had experience RECENTLY with air induction pump bypass kits to clear Error code P2440?
2. Is the issue with VSC trac light warning lights on related to air pump issue?

Have done a lot of research on both issues that I am having with my 06 4.7 and now a bit confused about what approach I should take to fix the problem short of replacing air pump.

This is a know issue with this engine and 5.7L. Toyota extended the warranty for this part to 150K mi on Tundra and Sequoia but not 4Runner.

 

[bigmike91]

I just got codes P2445 and P0418 recently and my 2008 V8 went into limp mode. Turns out my pump has failed with valves open so I ordered Hewitt Tech's bypass kit. Just got it in the mail and am installing sometime this week. I'll let you know how it goes.

 

[skott]

I've installed Hewitt Tech's bypass kit and it's worked well. I purchased the plug-and-play kit and installed the block-off plates and it was very easy to do.
The only issue I've had is when the outside temps are very cold (in the teens), I've had the CEL come on after driving for about 15 minutes for the air injection code. This was weird, because before installing the kit, the light would come on right after the engine was started. I contacted Hewitt and he said there is a known issue where sometimes in cold weather the vehicle seems to just decide "hey, I'm gonna check the air injection pumps" and throw a code. Hewitt wasn't trying to hide this fact and was up front about it.
Bottom line--the kits works, but in cold weather, keep your scan tool handy so you can reset the code if it comes on.
I'm still glad I installed mine.

 

[rikclark]

Error codes

I'd only be concerned with the p2440 code, the vsc trac lights come on regardless what code you have, kinda funky in my opinion lol ... Last time my car had a cat bank one code (dreaded cracked manifold lol) the trac lights came on and stayed on till I could do a full fzc (fail zero cal)... Fun stuff lol

Thanks for your input. I've replaced the right side exhaust maniold ($2200) and I have the procedure and "jumper rig" to do the zero point calibration. Think the P2440 code is more important. One thing at a time!

 

[rikclark]

Error codes

I'd only be concerned with the p2440 code, the vsc trac lights come on regardless what code you have, kinda funky in my opinion lol ... Last time my car had a cat bank one code (dreaded cracked manifold lol) the trac lights came on and stayed on till I could do a full fzc (fail zero cal)... Fun stuff lol

I just got codes P2445 and P0418 recently and my 2008 V8 went into limp mode. Turns out my pump has failed with valves open so I ordered Hewitt Tech's bypass kit. Just got it in the mail and am installing sometime this week. I'll let you know how it goes.

Big Mike, there is another vendor with what looks to be the same type kit at a lower price. Did you consider the other vendor, and if so, why did you choose to use the HT kit? I am interested in your satisfaction with the HT kit. Thanks.

 

[rikclark]

I've installed Hewitt Tech's bypass kit and it's worked well. I purchased the plug-and-play kit and installed the block-off plates and it was very easy to do.
The only issue I've had is when the outside temps are very cold (in the teens), I've had the CEL come on after driving for about 15 minutes for the air injection code. This was weird, because before installing the kit, the light would come on right after the engine was started. I contacted Hewitt and he said there is a known issue where sometimes in cold weather the vehicle seems to just decide "hey, I'm gonna check the air injection pumps" and throw a code. Hewitt wasn't trying to hide this fact and was up front about it.
Bottom line--the kits works, but in cold weather, keep your scan tool handy so you can reset the code if it comes on.
I'm still glad I installed mine.

Skott, I have a couple of questions for you, too, if you don't mind, Did you consider the other vendor of the same type kit? Did you install the block-off plates because you had to, or did you do it just to be sure? Was access to the area where you have to work on the block-off plates an issue? Did you need any special tools? I appreciate the valuable input you have already provided me.

 

[srs034runner]

May I ask why didn't you go with the Doug thorley headers, much cheaper and superior power upgrade (dyno proven 30hp/30tq)?

Thanks for your input. I've replaced the right side exhaust maniold ($2200) and I have the procedure and "jumper rig" to do the zero point calibration. Think the P2440 code is more important. One thing at a time!

 

[rikclark]

Error codes

May I ask why didn't you go with the Doug thorley headers, much cheaper and superior power upgrade (dyno proven 30hp/30tq)?

I was unaware there were aftermarket performance manifolds, especially at lower price. But then I didn't do any research either. Thanks, again.

 

[srs034runner]

That's a bummer man :/ glad it's fixed for ya!

I was unaware there were aftermarket performance manifolds, especially at lower price. But then I didn't do any research either. Thanks, again.

 

[skott]

rikclark--Honestly, I didn't shop around a whole lot for other kits. I read a few positive postings about the Hewitt kit and pretty much just bought it on the spot. I really liked the plug and play version of their kit--a third grader could install it and it looks factory.

As far as the block-off plates--I installed them just to be safe. Installation wasn't bad at all. My 4Runner had about 160K miles on it when I installed the kit so I was a little concerned about the nuts being rusty/crusty/seized so I sprayed them daily with a penetrating oil (I used Kroil) for about 4 days before I worked on it. The nuts came off with no problems at all and looked really good....I don't think I even needed the penetrating oil. When I re-installed the nuts, I did use anti-seize just to be safe.

Access to the nuts isn't too bad. Go in through the wheel well. If I recall correctly, the bottom nuts don't have quite as much room as the top ones, and you can only get a wrench on them...I don't think there was room for a socket.

All in all, the install of the block-off plates was an easy job, I think it took me 30 minutes to do both sides.

Hope this helps, and good look with whichever kit you decide to purchase.

 

[hewitt-tech]

Hey Guys,
I have pretty much spent most of my time the past couple of years over on the tundra forum mostly and have neglected the others for lack of time. Well, I recently traded my 05 and 10 tundra in on a 2015 4R Limited and figured I should say hello again. I think I had a username of PXSP on here but couldn't get back into it and besides the hewitt-tech is more fitting anyways.

I wanted to create a new thread to say hello as a new owner but post limit for new thread. I will try to spend some time around here this week and answer at least the few questions I have seen so far and hopefully contribute more to this forum as needed.

If you have any questions email and phone are the most reliable sometimes my multiple spam filters just don't let me know when I get a new forum message or subscribed thread response.

 

[hewitt-tech]

I've installed Hewitt Tech's bypass kit and it's worked well. I purchased the plug-and-play kit and installed the block-off plates and it was very easy to do.
The only issue I've had is when the outside temps are very cold (in the teens), I've had the CEL come on after driving for about 15 minutes for the air injection code. This was weird, because before installing the kit, the light would come on right after the engine was started. I contacted Hewitt and he said there is a known issue where sometimes in cold weather the vehicle seems to just decide "hey, I'm gonna check the air injection pumps" and throw a code. Hewitt wasn't trying to hide this fact and was up front about it.
Bottom line--the kits works, but in cold weather, keep your scan tool handy so you can reset the code if it comes on.
I'm still glad I installed mine.

It is a known cold weather issue that a few of the 05 and a hand full of the 06 vehicles have had. It can happen with or without the bypass module installed, it is just a glitch in the computer. We have a better explanation of the P2445 code on our website here:
Codes
Currently the only fix for that specific instance of the P2445 code is a reflash of the computer with the calibration file for it specifically. There was a service bulletin with the file number on it a few years ago.