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Old Mar 18, 2004 | 04:54 PM
  #1  
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Default check engine code

Anyone know the cause of a check engine code of P0441 (purge flow fault)?

My check engine light has been on for about a month untill resently, when it went off by itself!

I took the car to a parts place and a friend of mine plugged on a tool and got the code P0441.
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Old Mar 18, 2004 | 08:13 PM
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Just some stuff I found searching the gool 'ol internet....

"A loose or missing gas cap on a late-model Toyota often leads to a trouble-code hat trick of P0440, P0441 and P0446. Don't get carried away here because installing or tightening the gas cap usually takes care of all three codes."

"P0441
EVAP Emission Control System Improper Purge Flow"

Let us know what you find.
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Old Sep 17, 2005 | 11:22 AM
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Default Help!!!!

HELP!!!!

i just threw the same code -- p0441 -- which is the "puge flow fault" -- what does this mean??? and what should I do. Thanks for the help guys.

PS: I did recently install the SRT intake/ecu less than a 1000 miles ago, could that be tripping the check engine light?
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Old Sep 18, 2005 | 04:29 PM
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Help Anyone
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Old Sep 18, 2005 | 05:25 PM
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Did you happen to look at the post just above yours?
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Old Sep 18, 2005 | 05:27 PM
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Originally Posted by phisig
Help Anyone
Like the post you bumped said... tighten your gas cap - most likely cause of the problem.

Not sure if the code will clear itself or you need to get it done (or can just pull battery cable for 30 mins).
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Old Sep 18, 2005 | 05:38 PM
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Def tightened the gas cap and removed the + from the battery and let it sit for an hour to reset the ecu and clear the light, after an hour or two of driving the light came back on. I did this twice, making sure all my vac hoses were in place on the intake the second time. Any ideas???
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Old Sep 18, 2005 | 06:30 PM
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Originally Posted by phisig
Def tightened the gas cap and removed the + from the battery and let it sit for an hour to reset the ecu and clear the light, after an hour or two of driving the light came back on. I did this twice, making sure all my vac hoses were in place on the intake the second time. Any ideas???
Hey man,

There was a thread a little while ago that included all of the Lexus Tech's we have as members here. If you search for it you could PM one of them and they might know or else check their manuals when they get to work tomorrow.

Good luck,
Jonny
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Old Sep 18, 2005 | 08:10 PM
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After you have checked and or replace the gas cap use the following PDF for diagnostics.
(you may have to right click and save as)
Attached Files
File Type: pdf
P0441.pdf (131.1 KB, 5545 views)
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Old Sep 18, 2005 | 08:29 PM
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Originally Posted by russ29
Anyone know the cause of a check engine code of P0441 (purge flow fault)?

My check engine light has been on for about a month untill resently, when it went off by itself!

I took the car to a parts place and a friend of mine plugged on a tool and got the code P0441.
what kind of car and what year. depending on what year it is it could be a number of things
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Old Sep 18, 2005 | 08:31 PM
  #11  
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Originally Posted by DaveGS4
Like the post you bumped said... tighten your gas cap - most likely cause of the problem.

Not sure if the code will clear itself or you need to get it done (or can just pull battery cable for 30 mins).
thats only for code 446 not 441 441 could be a number of things. pcv, vsv, clogged vac line to the canister.
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Old Sep 19, 2005 | 06:51 AM
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So it sounds like its a vac line issue? What does pcv and vsv mean?

Originally Posted by koolaidman
thats only for code 446 not 441 441 could be a number of things. pcv, vsv, clogged vac line to the canister.
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Old Sep 19, 2005 | 01:35 PM
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Default Getting codes read

where do you go to get your codes read? I went to Advance Auto parts and they can't read my codes!
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Old Sep 19, 2005 | 02:13 PM
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I went to advance, and they couldn't do it, but then i visited auto zone and they did it
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Old Sep 19, 2005 | 06:14 PM
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Originally Posted by phisig
So it sounds like its a vac line issue? What does pcv and vsv mean?
pcv not sure what it means but vsv is vac sensing valve
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