Got a P0441 code
All Star
Joined: Jun 2007
Posts: 981
Likes: 0
From: Langley, BC, Canada
i love code questions... best $40 i ever spent
SYMPTOM
P0441-EVAP PURGE FLOW MONITOR
WHEN MONITORED
With engine temperature greater than 170 °F , fuel control in closed loop, engine idling for 2 minutes , no low fuel, MAP less than 15.7 inches mercury and barometric altitude less than 8,000 feet .
SET CONDITION
After having passed the Leak Detection Pump (LDP) test, no air flow through the evaporative system is detected by the EVAP monitor.
POSSIBLE CAUSES
EVAP Canister
Vehicle History and Service Bulletin Investigation
Wiring Harness Intermittent
EVAP Purge Hose (Canister to Fuel Tank)
EVAP Purge Hose (Solenoid to Canister)
EVAP Purge Solenoid Vacuum Supply
EVAP Purge Solenoid (Leaky/Stuck Open)
EVAP Purge Solenoid (Stuck Closed)
SYMPTOM
P0441-EVAP PURGE FLOW MONITOR
WHEN MONITORED
With engine temperature greater than 170 °F , fuel control in closed loop, engine idling for 2 minutes , no low fuel, MAP less than 15.7 inches mercury and barometric altitude less than 8,000 feet .
SET CONDITION
After having passed the Leak Detection Pump (LDP) test, no air flow through the evaporative system is detected by the EVAP monitor.
POSSIBLE CAUSES
EVAP Canister
Vehicle History and Service Bulletin Investigation
Wiring Harness Intermittent
EVAP Purge Hose (Canister to Fuel Tank)
EVAP Purge Hose (Solenoid to Canister)
EVAP Purge Solenoid Vacuum Supply
EVAP Purge Solenoid (Leaky/Stuck Open)
EVAP Purge Solenoid (Stuck Closed)
This may be too simple, BUT I was getting that code awhile ago and I did some thinking and it started right after I changed my gas cap.
Back when gas was so high here I had a couple of instnaces where my gas was being siphoned. I am not talking about a couple of gallons either. I fulled my truck up one morning, went to work that night the meter was still on a full tank. When I got off work it was down to 1/8 of a tank! I have a 35 gallon tank, and how they sat there for that long and never got caught was beyond me.
Anyways, right after I went to Oriely's and got a locking gas cap, I started to get that code. I kept clearing it out, checking all the lines everything was good.
I just got a wild hair up my *** and decided to try the old gas cap, The code went away and hasnt came back yet.
Got to looking at the locking cap, and it didnt have ANY vents on it.
You might look at yours, they might be clogged up.
Back when gas was so high here I had a couple of instnaces where my gas was being siphoned. I am not talking about a couple of gallons either. I fulled my truck up one morning, went to work that night the meter was still on a full tank. When I got off work it was down to 1/8 of a tank! I have a 35 gallon tank, and how they sat there for that long and never got caught was beyond me.
Anyways, right after I went to Oriely's and got a locking gas cap, I started to get that code. I kept clearing it out, checking all the lines everything was good.
I just got a wild hair up my *** and decided to try the old gas cap, The code went away and hasnt came back yet.
Got to looking at the locking cap, and it didnt have ANY vents on it.
You might look at yours, they might be clogged up.
Veteran
Joined: Aug 2007
Posts: 420
Likes: 1
I had to pull my canister off to see that the hose was destroyed.
Cartman
Professional
Joined: Feb 2008
Posts: 211
Likes: 0
From: Roanoke, VA
I've had this code for awhile now. Replaced the hoses, replaced the selenoid, still got the code, even tried a new cap...havent tried replacing the canaster yet. I will probably try swapping it out as soon as it warms up a bit here.. I have to replace my plenum gasket for a second time anyway.