There is one by the air intake somewhere. That one's easy to replace... the second is by the gas tank.............

it's hard to get to and in an incredibly stupid place up there... and that's the one that usually goes bad unfortunately...


this thread has some nice clear pictures


(HELP) Parts list for 2000 Camry V6 1MZ-FE | Page 6 | Toyota Nation Forum

 

The VSV for the EGR circuit is under the plastic cover. In the thread 1990Toyora linked, it's #4 in this picture:

You can test that valve by applying 9-12v for it and listening for an obvious click. Mine failed that test miserably (though my '94 was generating a P0402 for excessive EGR flow rather than your 0401 for insufficient flow). Could just be a function of which position the VSV stuck in?

If you do order a replacement - be sure to order the red one. The blue one (#1 in the picture) is also a VSV but it's keyed differently. I made that mistake and had to return/swap.

 

EDIT: Sorry, disregard my questions below. It seems like the link 1990Toyota posted may have some answers and further leads I can follow.

The VSV for the EGR circuit is under the plastic cover. In the thread 1990Toyora linked, it's #4 in this picture: View attachment 421827 You can test that valve by applying 9-12v for it and listening for an obvious click. Mine failed that test miserably (though my '94 was generating a P0402 for excessive EGR flow rather than your 0401 for insufficient flow). Could just be a function of which position the VSV stuck in? If you do order a replacement - be sure to order the red one. The blue one (#1 in the picture) is also a VSV but it's keyed differently. I made that mistake and had to return/swap.

I am having the same issue identifying part numbers for all of those parts, and which one I should be replacing (#s 1,4 and 2, are all noted as VSVs in my evap system diagram. There is also a vsv on the charcoal canister? Can you note what each of those valves are in the picture? Also I do not have #5 in my engine, what is that? (2000 Solara SLE (V6, 3.0) 1MZ-FE. I'm getting the dreaded P0441, P0442, and P0446. Have been ignoring it for years, but now I'm getting what I believe is vapor lock if I've been driving the car for more than 40 minutes, and particularly on warmer days.

 

I don't know if this parts diagram will help you that much, but perhaps it will. I feel the main thing each of you should do is follow the vacuum lines from these VSV's - that will tell you what they are servicing. Then come back to the parts diagram and find the corresponding Toyota part numbers - then you will know what you need to get (new anyway) to see if you can get replacements, or where the VSV's are located on salvage car VSV donors.

 

I don't know if this parts diagram will help you that much, but perhaps it will.

This is very helpful as I had trouble finding a good diagram, thanks! The Haynes manual is ok, and I was able to confirm the response to the linked thread with the circled picture is correct!