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The dreaded P0441 code

4043 Views 9 Replies 7 Participants Last post by  Smaay
This is my first post on this forum. I'm posting because I read previous posts here and believe that the experts here know the most about this problem.

The code is being set on my grandsons 2001 Celica GTS. Also, whenever he gets gas the engine either will not start without depressing the accelerator pedal, or will start but runs rough, or starts okay but shuts off soon thereafter. All of these symptoms go away after a few minutes.

I've done various tests by referring to my Celica manual, and the official Celica wiring diagram manual. I won't go into details about the tests now though because I found one problem that could be the one causing the code.

On his car the blue headed connector is connected to the VSV for EVAP. From reading prior posts here, and referring to the Celica wiring diagram, this is wrong. The black connector should be connected to the VSV for EVAP. But, when I disconnected the blue, and connected the black, the ABS light started flashing. I don't know what this means. So, before I permanently switch the connectors, I'm trying to find out if someone else has had this occur, and what they did.
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the blue connector goes to the butterfly valve in the stock air box. the black connector is for the EVAP purge VSV.

As for the rest of the symptoms, unless the Evap purge is being enacted when the motor cannot manage the extra fuel stored in the charcoal canister under the car (hot start, idle, etc.), or it is stuck open all the time then I suspect they may not be related to the P0441.
there is no fuel in the charcoal cannister. only vapors. where did you come up with that?
are you getting a P0440 also?

the blue plug has nothing to do with the ABS system.

look into the switching valve back on the charcoal canister under the gas tank
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