What is the EVAP Emission Control System?

[Garth]

Following on from my boost leak thread, I think I have identified the boost leak as a failed diverter valve. I now have a new valve to replace the old one, which should clear one fault.

The other fault code I have is this one:
001089 - EVAP Emission Control Sys: Incorrect Flow
               P0441 - 002 - Lower Limit Exceeded - MIL ON
             Freeze Frame:
                    Fault Status: 11100010
                    Fault Priority: 0
                    Fault Frequency: 15
                    Mileage: 101064 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 13:39:07

             Freeze Frame:
                    RPM: 827 /min
                    Load: 21.6 %
                    Speed: 0.0 km/h
                    Temperature: 72.0°C
                    Temperature: 12.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 14.224 V

Ross-tech explain it here:
http://wiki.ross-tech.com/index.php/16825/P0441/001089

But what is this system and where do I start looking?

Could this be caused by the boost leak from faulty diverter valve? This error I have had for a while but the boost leak is a recent one.

I don't really know where to start with this one.

Bring back the good old days. I remember rebuilding my sisters Punto engine after the cylinder head went and I pulled out every single component from the head and completely rebuilt it, re-grinding the valves and everything. I miss those days.... It's all bloody electronics now 

[RedRobin]

I'm not familiar with all the Ross/VCDS codes etc but can tell you that a failed DV (Diverter Valve) would create a boost leak. The earlier GTI's were quite prone to ripping the plastic diaphram on the oem DV if the car was tuned. A very random fault but lost of cases.

VW/VAG revised the DV lost of times and although mine didn't rip I got a Forge DV as a precautionary measure.

I understand that the current VAG DV is up to the job but someone else will have to confirm this.

[Garth]

Thanks for teh replay mate, but I have actually already established that part 

I have a new dv to replace the old one as the is what is causing the boost leak. Its the other fault (that is longer running) that I now need to solve 

[danishmkvgti]

i think you need to check your PCV diaphram situated on the camcover, a good replacement is the BSH pcv fix W/O catch can, 

[danishmkvgti]

I'm not familiar with all the Ross/VCDS codes etc but can tell you that a failed DV (Diverter Valve) would create a boost leak. The earlier GTI's were quite prone to ripping the plastic diaphram on the oem DV if the car was tuned. A very random fault but lost of cases.

VW/VAG revised the DV lost of times and although mine didn't rip I got a Forge DV as a precautionary measure.

I understand that the current VAG DV is up to the job but someone else will have to confirm this.

rubber, not plastic, ever heard of a plastic condom??      

[Garth]

i think you need to check your PCV diaphram situated on the camcover, a good replacement is the BSH pcv fix W/O catch can, 

Thanks mate, I'll take a look in the morning

[vRS Carl]

That fault is nothing to do with the DV or the PCV

I have had it a couple of times (including with the BSH catch can)

It is a random fault and according to Skoda it's to do with the Charcoal canister.

IIRC they wanted some stupid amount to replace the canister and i said ram it as the car drives normally and it's not a constant fault.

If you are getting it permanently i would take it VW and get them to tell you exactly what it is that is wrong.

Carl

[182_blue]

I have had this randomly and it clears usually, i have seen it on two other cars also, non of these have any problems with power etc etc, so i would be tempted to leave it, if you must do it then its a canister change along with some of the pipework and a small valve iirc

[RedRobin]

rubber, not plastic, ever heard of a plastic condom??      

....Plastic = a synthetic material made from a wide range of organic polymers which can be moulded into shape while soft and then set into either a rigid or slightly elastic form.

[danishmkvgti]

rubber, not plastic, ever heard of a plastic condom??      

....Plastic = a synthetic material made from a wide range of organic polymers which can be moulded into shape while soft and then set into either a rigid or slightly elastic form.

I know  , but it is made of rubber, i have one right here in front of me. Sorry RR, it wasn't meant in any other way than just a little laugh.
And i stand corrected regarding the reason for this error code 

[RedRobin]

^^^^
No problem, Danish   

Why do you have one right in front of you? You're not thinking of using it as a contraceptive are you? 

[Garth]

If you are getting it permanently i would take it VW and get them to tell you exactly what it is that is wrong.

Carl

Already tried that and VW just cleared it and sent me on my way. The car drives fine with the light on, but I don't like looking at the light!!

I have had this randomly and it clears usually, i have seen it on two other cars also, non of these have any problems with power etc etc, so i would be tempted to leave it, if you must do it then its a canister change along with some of the pipework and a small valve iirc

Same here. Thanks for the suggestion, I will probebly pull the canister and associated pipework to make sure it's all clear when I replace the dv tomorrow.
 

[danishmkvgti]

^^^^
No problem, Danish   

Why do you have one right in front of you? You're not thinking of using it as a contraceptive are you? 

The missus might find it stimulating, about double the size of what she's used to 

[xxx_mojo_xxx]

oh dear... 

[micky 32]

Mater does the fault put the engine light on? I know on the american tfsi's if the petrol cap is loose or faulty it can create that fault with a light though.