To learn more about Evaporative Emissions Systems, read ©, 2017 Rick Musocplat Save Save Save. The gas cap was replaced at the next come back to the dealer. Any suggestions what to do from here before I take it to a garage for further investigation? Clicks and holds vacuum, etc. How to fix your Toyota Evap P0446, P0442, P0440 Check Engine Code problem for less than a million dollars. Toyota Part 77740-08042 which replaced 77740-08041 The new part number probably means that the old ones all had a problem. Good luck and keep us posted.
This code does not cause drivability issues unless the Cat is clogged. Here is the fuel tank on your Sienna. Eventually this leads to plugging up the canister or purge valve failure. ????. Oh, taking each apart to see the diaphragms is hard - they glued them together - that did not stop me of course. The gas cap was replaced at the next come back to the dealer. At one time it went months without coming back on.
This warranty is in effect for 36 months or 36,000 miles, whichever occurs first, from the vehicle's in-service date. How to fix your Toyota Evap P0446, P0442, P0440 Check Engine Code problem for less than a million dollars. Could this valve at the canister go bad that fast?. Replacing the overfill check valve on a 2000 Toyota Camry. The codes are telling us that this system has stopped working or the sensor in the tank thinks so anyway. The bad news is that leaks anywhere pretty much set the same codes.
And since the filler neck and cap were replaced, that area would be suspect to, and should get a good visual inspection. The bulletin states that under some conditions, you may encounter a Solara or Camry P0440, P0441, P0446 trouble code. PayPal Was it worth a dollar? One way I knew we had a leak is because that sucking sound when you remove the gas cap to refuel had stopped happening - another clue! Units Affected 53061 Many enthusiasts prefer a rear-wheel-drive platform to a front-wheel-drive alternative if financial realities haven't entered the equation. At one time it went months without coming back on. I would take it back and ask that the canister purge valve be changed or even ask for a new canister as there are occasions when filling the tank to the filler hole will induce fuel into the canister causing it to malfunction. My problem was one of those circle valves actually on the canister. If I clear the codes they stay off a couple of days and then the same ones come back on.
It now has like 198,000 on it, and I drive it to Mexico. Any other ideas for me? Then purchase a new fuel cap Clear the codes and see how it does. Links for tools I recommend and use in this video 1997 1998 1999 2000 2001 2002 Toyota Camry 4 cylinder and V6 engines. There is a tsb for all 3 codes coming on. Several years ago I started getting the sequence intermittently, sometimes 0442, 0r 0446, maybe something else.
The easy thing to do is buy a Toyota gas cap and put it on after clearing the code. I have been fighting this with my 2003 Avalon. Mine was perished and split in the center. See if codes come back. Toyota Part 77740-08042 which replaced 77740-08041 The new part number probably means that the old ones all had a problem.
Please or to join the conversation. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components. This code does not cause drivability issues unless the Cat is clogged. My suggestion is look at all the hoses etc really well for cracks, damage, chaffing, good tight connections. If I clear the codes they stay off a couple of days and then the same ones come back on. P0446 2001 Toyota Camry Description The Evaporative System canister vent control valve is located on the canister and is used to seal the canister vent.
Also, be aware that some aftermarket cats can cause this issue right out of the box, even though they are working withing emissions specifications. So what does the Evaporation System do anyway? On Sienna Chat, a man reported he had the same intermittent issue, but he had two identical Siennas. I'm hoping it's not the charcoal canister like I've been reading about, because of the cost to have it fixed. This went on for more than a year. Has P0420 code on it, ~120K miles which is probably when o2 sensors should be replaced by now When I hook up my scan tool it only shows data for one o2 sensor but car has 2 sensors. Clear the codes and run for a while. He bought a new canister and put it on.
Fuel vapors are stored in the charcoal canister. Is a vacuum held for at least 1 minute? Could you please provide me that one as well? There is a tsb for all 3 codes coming on. So, I went to another dealer for a second opinion and the tech told me that whoever replaced the charcoal canister messed up the leak detection pump which is a part of the charcoal canister assembly. Computer sensors did not re-set until 501 mile mark, when light came on again. On Sienna Chat, a man reported he had the same intermittent issue, but he had two identical Siennas. Gasoline in your gas tank and entering the tank does evaporate a little causing gas fumes, which harm the environment.
So the search is still on. Mechanic who did original smoke test and recommended replacement of filler tube wants to replace evap canister without checking anything else. How to fix 2001 Toyota Sienna Evap System Error P0446 P0442 P0440 P0441 Other years 1999, 2002, 2003, 2004, 2005 unknown if applicable - anyone? A google search will show you this way. A lot of problems reported here with faulty purge valves. Also, if you add a link to this page, other owners can share this too. Problem solved, and it has been several years. For California, Massachusetts, Maine and Vermont, the Toyota Federal Emissions Warranty is in effect for 36 months or 50,000 miles, whichever occurs first, from the vehicle's in-service date.