3rd & 4th Generation (1992–1996 & 1997–2001)Toyota Camry Discussion for years: 1992-1996 & 1997-2001
Topics of discussion range from fuel economy, safety, modifications, performance all involving America's favorite family car, the Toyota Camry.
Just until a few days ago, my Check Engine Light had been illuminated for months and I wasn't sure what was causing this, but after I received my new UltraGuage EM, I was able to read the trouble codes and clear the light.
Here are the current trouble codes...
P0440
P0441
P0446
After researching online, I found out that these codes are from the EVAP system in my Camry, but it gave several possible causes, such as...
-Broken solenoid
-Vacuum leak
-Loose gas cap(bought a brand new one a few months back)(NON factory)
-Charcoal canister
I am curious as to which it could be.......also, where is the charcoal canister located on a 2001 Toyota Camry???
Thanks!
-LSS
__________________
2001 Toyota Camry 2.2L-I4, automatic transmission with 157,000 miles.
The most common cause for these code are the VSV (vacuum switching valve) sticking or failing in the EVAP and EGR system. There is one on the air filter box (p0440), one under the intake manifold (P0441), and another charcoal canister (p0446). The charcoal canister is next to the fuel tank between both lower control arms
Will this affect fuel economy at all? Will any major problems occur from this situation???...
What will happen if I let these codes persist?
Thanks!
Quote:
Originally Posted by Yuko
The most common cause for these code are the VSV (vacuum switching valve) sticking or failing in the EVAP and EGR system. There is one on the air filter box (p0440), one under the intake manifold (P0441), and another charcoal canister (p0446). The charcoal canister is next to the fuel tank between both lower control arms
__________________
2001 Toyota Camry 2.2L-I4, automatic transmission with 157,000 miles.
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1995 Camry Wagon LE. 2.2 4cyl, 5S-FE, Auto, 187K
Last edited by TrailDust; 09-01-2011 at 04:37 PM.
Reason: FSM/copyrighted material link removed per Forum Rules. Also, baiting comment removed...be nice.
I agree you would think all the smog just blows in from Mecico , however I think Texas has emissions county's. these are counties that require smog testing.....my guess is San Antonio requires it....it is always a good idea to just fix your car anyways in the long run...
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2006 Vibe, White, 1zzfe, auto ( Toyota type IV), AWD, PW, PL, CC, AC, 161,000(5/12/2012)
1998 Camry LE, 4 door, Puke Green, I4(5S-FE), CA Emissions, Auto(A140E), 122k(3/22/2012), AC,CC, ABS, Built in Japan 04/98. Grandmas old car(acquired 7/22/2011), work= precat Denso A/F sensor, NGK wires.
Last edited by TrailDust; 09-01-2011 at 04:38 PM.
Reason: Copyrighted material link removed from quote, as well as additional statement.
other than that, autozone repair guides are also free and contain some fine material too.
if you have tons of spare time, you can sign up with local public library and get access to their copy of automotive repair manuals (most should have Mitchel which is almost a mirror copy of FSM).
Haynes repair manual (a book from parts stores) is also not bad, but usually over complicated a bit and muddy clear on some things
for best details though, get your copy of FSM and you will have all the diagnostics procedures and troubleshooting steps laid out, they are over-complicated sometimes yes, but usually point to the right results (sooner or later hehe). just, never follow the step on replacing the ECU/ECM and you will be good
back on subject, I would fix those codes soon. bad emissions can ruin some parts, like fragile catalytic converter or make other stuff dirty (think of EGR system). they could also potentially harm the MPG and car performance (depending on what the problem is exactly) .. some other times they can improve performance though ... just don't enjoy it for too long if that's the case
for initial troubleshooting step, try the easiest attempt. get a new OEM (I mean it) fuel tank cap from dealer, around $15 online or around $25 MSRP locally. it *may* fix the EVAP codes instantly (reset the ECU afterwards and see if they come back).
on a side note I loved the acceleration response from my V6 when it had a broken wiring to both Air Fuel Ratio sensors, ECU was effectively holding the car in fuel open loop indefinitely (relying on internal predefined fuel maps) ... man ... that car felt like a rocket haha .. only problem that it burned fuel on highway like it was city driving ... then I fixed it
__________________ '02 Solara SLE V6 1MZ-FE/A541E Coupe .: Denso/NGK : Akebono SP : Philips 9011 HIR (low+high) : Toshiba HIR2 9012 (fogs) : Magnefine :. @ 131k
'00 Solara SE 5S-FE/A140E Coupe .: NGK : Hawk HPS : Philips XP : RCEng : Magnefine :. @ 82k
4SALE: connectors for Camry Headlight Wiring Harness and ECU
The Following User Says Thank You to fenixus For This Useful Post:
1) the OP should rent or buy a smoker and look for leaks........
2) He also should rent or buy a scanner that reads PID's and post the results here.........we will be able to solve it then.....
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2006 Vibe, White, 1zzfe, auto ( Toyota type IV), AWD, PW, PL, CC, AC, 161,000(5/12/2012)
1998 Camry LE, 4 door, Puke Green, I4(5S-FE), CA Emissions, Auto(A140E), 122k(3/22/2012), AC,CC, ABS, Built in Japan 04/98. Grandmas old car(acquired 7/22/2011), work= precat Denso A/F sensor, NGK wires.
The Following User Says Thank You to Woodyg For This Useful Post:
Oh, I am in the same situation, same codes are appearing.
If you search here about those codes you will find a DIY with pictures! OY, you should be so lucky!
In the DIY a poster there jmc55ma, suggested buying the required VSV at RockAuto.com, look under your car and "Emission" then "Vacuum Control Valve" it sells for $23. Beats other prices for the same part from Advance Auto etc.
Jmc55ma, suggested cutting the mounting bolt head off with a hacksaw blade, no handle to get in the tight spot, good advice. May wish to have a replacement bolt ready, a M4 apparently. All explained in the diy
Oh, glad you took my advice and got the "UltraGuage".
Rock Auto has your dash carpet also.
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2000 Camry IL4 5S-FE 100,000mi or 171,000km
Last edited by Brit101; 09-02-2011 at 08:25 AM.
The Following User Says Thank You to Brit101 For This Useful Post:
I'm glad I did too!...I just need to find a place to mount on my dash, but can't seem to find a reasonable spot and making a custom mount for it as I do not like the mounting options that came with it.
I will checkout Rock Auto, thanks!
-LSS
Quote:
Originally Posted by Brit101
Oh, glad you took my advice and got the "UltraGuage".
Rock Auto has your dash carpet also.
__________________
2001 Toyota Camry 2.2L-I4, automatic transmission with 157,000 miles.
I am going to remove the charcoal canister as it isn't really needed...it is more of an interference then beneficial to the car.
Why would you remove it when it's probably not the source of your problem? As you stated, you tightened the gas cap. It's not an "interference" and will not affect anything except put more pollution into the air if you remove it.
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1995 Camry Wagon LE. 2.2 4cyl, 5S-FE, Auto, 187K
I had a P0446 code forever on my Gen4 V6. As it turned out, there are 4 VSVs in mine, 3 under the plastic engine cover and one near the charcoal canister inside the engine bay. If you have an ohmmeter, you can check the resistance between the two terminals and if they are within 33-39 ohms, the VSV is fine. One under the cover showed 41-ohm which I changed out anyway. The other by the charcoal canister was an open circuit, so that had to go. Once both were replaced, the P0446 went away. While I had the CEL, it didn't affect driving as much, but when you try to accelerate, you will definitely smell the polluting scent.
Also, there are two different types of VSV depending on how the plug gets connected. Look at the picture below and see how the tab is different. So make sure you get the right one.
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Trouble Codes
, however I think Texas has emissions county's. these are counties that require smog testing.....my guess is San Antonio requires it....it is always a good idea to just fix your car anyways in the long run...
.. only problem that it burned fuel on highway like it was city driving 
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