EVAP Purge Monitor Failure

[Silver Snake]

This is the code that set off my check engine light. I believe this
is the second time. The first time the light came on it was the
same thing, if not something similar, however, the code and light
were cleared and now a month later it's back. Anyone have any idea
what this is? It is at the dealer right now and they say the front
facia has to come off in order for them to proceed. Everything will
be covered under warranty as long as the problem ends up being an
item covered, otherwise I gotta pay over $400 for this. Thanks.

Mark

 

[Jerry Dobson]

Do you know the code? There is a solenoid valve that could be bad.

If you are getting a Evap code $A1 then most likely the hose is popped off the canister.

 

[STUGOTS]

i got a large emissions evap leak from changing gas caps

 

[BruceW]

Do you throw a code on a cold startup when your gas tank is low on fuel? Mine has done that. What's happening is that the leak detection pump is not able to pressurize the system within the time frame it's set for and so it assumes you have a leak in the evap. plumbing. Air is compressible and gas isn't so with mostly air in your tank it takes longer to pump up the pressure for the leak detection cycle. So, you might have a small leak somewhere or your leak detection pump is not quite up to *****. I had my pump replaced when this first happened and it didn't solve the problem so either I have a small leak or the pump's are a little too wimpy.

 

[Silver Snake]

Thanks for the help so far. Here is the actual code.

P0441 - EVAP PURGE MONITOR FLOW FAILURE

I guess there is a solenoid that purges the fuel vapor into the
intake and then checks the O2 sensors to verify the vapor got
released into the intake or not. John Hine thinks that it is either
the solenoid that is not working or there is a leak in one of the
hoses got to or from the solenoid. I asked them to manually
activate the solenoid to see if they could hear it. They are going
to get back to me.

So, what do you all think about this. Could it still be the gas
cap, or should I let them pull the nose off the car and find a
cracked or leaky hose (that is not covered under warranty). Is it
likely that it is the solenoid (that is covered under warranty)?

Also, if you could give me more detailed instructions on how to fix this myself via the access hole OR by removing the front facia.

Thanks again.
Mark

 

[txlen]

mark...see my post on the alley...regarding this..Len

 

[STUGOTS]

i get a code when my batter is not enought charged for a "PERFECT" start like if it starts slow,mine also does a code when its really low on gas.