Ck engine code 0441 - TundraTalk.net

Peanutmantx · 10-07-2007, 04:20 PM

I have an 2002 Tundra, Ck engine code 0441 EVAP system incorrect purge flow detected came on today,
What does it mean? Thanks

JackMS · 10-07-2007, 04:37 PM

If you just filled fuel recently, check that your gas cap is tight. Service manual lists 5 things.
1. Purge valve
2. Purge valve circuit (between purge valve and ECM)
3. Leakage from EVAP line(between purge valve and intake manifold)
4. EVAP line (between purge valve and canister)
5. ECM

I had this code on my 05, but I think I had another code with it. I replaced my charcoal canister/vacuum pump assembly. I suspected that because the truck had flooded up to the floorboard. Fixed the problem and was only $150, + or -, for the whole assembly new from Toyota. The assembly is under the truck near the gas tank. You can check the wires and hoses on that assembly pretty easy just to see if anything looks wrong.

Peanutmantx · 10-07-2007, 04:46 PM

What is EVAP? Thanks

JackMS · 10-07-2007, 06:34 PM

It is the Evaporative Emission system. About 5 hours ( I think) after shutting off your truck, a vacuum pump turns on to pull a vacuum on the system to check it for leaks. There is a rubber hose, about 3/4" or 1", that goes from your fuel fill pipe to a charcoal canister under the truck. All the vapors coming off the fuel in the tank go through the charcoal and are filtered out instead of just going into the atmosphere. I think when the truck is running, the engine provides the vacuum. Been a while since I worked on it so a few of the details could be wrong, but that is basically it as I understand it.

RunItHard · 10-08-2007, 08:06 AM

Quote:

Originally Posted by Peanutmantx

I have an 2002 Tundra, Ck engine code 0441 EVAP system incorrect purge flow detected came on today,
What does it mean? Thanks

I got the same error message and it turned out to be the new locking gas cap I installed... Just didn't screw the thing down tight enough. The dealer told me the Tundras are very sensitive to all their sensors. I guess he was right.

The other thing he told me is unfortunately once the light comes on, you need to go to the dealer to have them shut it off. That is unless you have an error code reader with a reset on it, which I fortunately have.

jpnca · 10-08-2007, 11:01 AM

On the Tacoma I can diconect the battery to reset the computer. It may work on the tundra

10-07-2007, 04:20 PM	#1 (permalink)
Peanutmantx Junior Member Join Date: Oct 2007 Posts: 2	Ck engine code 0441 I have an 2002 Tundra, Ck engine code 0441 EVAP system incorrect purge flow detected came on today, What does it mean? Thanks

10-07-2007, 04:37 PM	#2 (permalink)
JackMS Member Join Date: Aug 2007 Location: Gulfport, MS Posts: 64	If you just filled fuel recently, check that your gas cap is tight. Service manual lists 5 things. 1. Purge valve 2. Purge valve circuit (between purge valve and ECM) 3. Leakage from EVAP line(between purge valve and intake manifold) 4. EVAP line (between purge valve and canister) 5. ECM I had this code on my 05, but I think I had another code with it. I replaced my charcoal canister/vacuum pump assembly. I suspected that because the truck had flooded up to the floorboard. Fixed the problem and was only $150, + or -, for the whole assembly new from Toyota. The assembly is under the truck near the gas tank. You can check the wires and hoses on that assembly pretty easy just to see if anything looks wrong. __________________ 2007 Tundra D/C Ltd 4wd 2005 Tundra D/C SR5 2wd 2004 Sequoia SR5 2wd

10-07-2007, 04:46 PM	#3 (permalink)
Peanutmantx Junior Member Join Date: Oct 2007 Posts: 2	Evap What is EVAP? Thanks

10-07-2007, 06:34 PM	#4 (permalink)
JackMS Member Join Date: Aug 2007 Location: Gulfport, MS Posts: 64	It is the Evaporative Emission system. About 5 hours ( I think) after shutting off your truck, a vacuum pump turns on to pull a vacuum on the system to check it for leaks. There is a rubber hose, about 3/4" or 1", that goes from your fuel fill pipe to a charcoal canister under the truck. All the vapors coming off the fuel in the tank go through the charcoal and are filtered out instead of just going into the atmosphere. I think when the truck is running, the engine provides the vacuum. Been a while since I worked on it so a few of the details could be wrong, but that is basically it as I understand it. __________________ 2007 Tundra D/C Ltd 4wd 2005 Tundra D/C SR5 2wd 2004 Sequoia SR5 2wd

10-08-2007, 11:01 AM	#6 (permalink)
jpnca Super Moderator Join Date: Apr 2007 Location: San Gabriel Valley Posts: 1,884	On the Tacoma I can diconect the battery to reset the computer. It may work on the tundra __________________

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