Still in Limp Mode After Fix?

I recently bought a 2007 Toyota Tundra 4.7L V8 with 147000 miles. The thing is mint except for one little issue. The previous owner said I'd have to repair the secondary air pump, which I did. I also replaced the bypass valve after it still kept throwing the same code (P2445). Now, after two repairs, it still shows the same code. I've driven it 50+ miles since then, tried clearing it multiple times with my scanner, and I've even disconnected the battery. It fixes it temporarily, only for it to come back on after a few hours each time, and puts me back into limp mode. Any ideas?

 

Hewitt Tech Bypass kit. Or a DIY one.

https://hewitt-tech.com/

 

Thanks, but aren't these illegal unless under certain conditions? If this is the only option I'll go for it just because I've already repaired everything.

 

Yes, disabling or tampering with emissions equipment is illegal in probably every state which requires emissions testing.

Now that does not mean the tundra wouldn't pass the sniffer test. The problematic system is only designed to pump ambient air into the exhaust on "certain" cold start-ups and only for a short period (probably till the Cats warm up a bit). So it's nothing that should effect output while testing other than the CEL and other dash warnings, which are an automatic fail.

I believe the Hewitt disables the air injection system and any associated warning lights, limp mode, etc.

So no, it is not legal in most states, but it doesn't cause you to be a gross polluter or anything.

While an actual repair would be great, the replacement parts don't seem to be reliable, so kinda seems like a huge waste of money.

If/when my AIP fails, I will definitely be bypassing and not even feel a little bad about it.