P1441 Code "Evap System Flow During Non Purge"
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P1441 Code "Evap System Flow During Non Purge"
This may be of help (from ALLDATA)
P1441
SYSTEM DESCRIPTION
This DTC tests for undesired intake manifold vacuum flow to the evaporative emission (EVAP) system. The control module seals the EVAP system by commanding the EVAP canister purge valve OFF and the EVAP canister vent valve ON. The control module monitors the fuel tank pressure (FTP) sensor to determine if a vacuum is being drawn on the EVAP system. If vacuum in the EVAP system is more than a predetermined value within a predetermined time, This DTC sets
DTC P1441
The table illustrates the relationship between the ON and OFF states, and the Open or Closed states of the EVAP canister purge and vent valves.
CONDITIONS FOR RUNNING THE DTC
DTCs P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0125, P0440, P0442, P0443, P0446, P0449, P0452, P0453, P1106, P1107, P1112, P1114, P1115, P1120, P1220, or P1221 are not set.
The ignition voltage is between 10-18 volts .
The barometric pressure (BARO) is more than 75 kPa .
The fuel level is between 15-85 percent .
The engine coolant temperature (ECT) is between 4-30°C (39-86°F ).
The intake air temperature (IAT) is between 4-30°C (39-86°F ).
The start-up ECT and the IAT are within 9°C (16°F ).
The vehicle speed sensor (VSS) is less than 121 km/h (75 mph ).
CONDITIONS FOR SETTING THE DTC
The control module detects vacuum during a non-purge condition.
ACTION TAKEN WHEN THE DTC SETS
The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
CONDITIONS FOR CLEARING THE MIL/DTC
The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not tail.
A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
Clear the MIL and the DTC with a scan tool.
DIAGNOSTIC AIDS
An intermittent condition could be caused by an improperly installed or damaged EVAP canister purge valve or a temporary blockage in the EVAP canister purge valve. To repair a blockage in the EVAP system refer to Evaporative Emission (EVAP) System Cleaning.
TEST DESCRIPTION
See attachmet, sorry its blurry, i'll try to make a better copy
Steps 1-7
P1441
SYSTEM DESCRIPTION
This DTC tests for undesired intake manifold vacuum flow to the evaporative emission (EVAP) system. The control module seals the EVAP system by commanding the EVAP canister purge valve OFF and the EVAP canister vent valve ON. The control module monitors the fuel tank pressure (FTP) sensor to determine if a vacuum is being drawn on the EVAP system. If vacuum in the EVAP system is more than a predetermined value within a predetermined time, This DTC sets
DTC P1441
The table illustrates the relationship between the ON and OFF states, and the Open or Closed states of the EVAP canister purge and vent valves.
CONDITIONS FOR RUNNING THE DTC
DTCs P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0125, P0440, P0442, P0443, P0446, P0449, P0452, P0453, P1106, P1107, P1112, P1114, P1115, P1120, P1220, or P1221 are not set.
The ignition voltage is between 10-18 volts .
The barometric pressure (BARO) is more than 75 kPa .
The fuel level is between 15-85 percent .
The engine coolant temperature (ECT) is between 4-30°C (39-86°F ).
The intake air temperature (IAT) is between 4-30°C (39-86°F ).
The start-up ECT and the IAT are within 9°C (16°F ).
The vehicle speed sensor (VSS) is less than 121 km/h (75 mph ).
CONDITIONS FOR SETTING THE DTC
The control module detects vacuum during a non-purge condition.
ACTION TAKEN WHEN THE DTC SETS
The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
CONDITIONS FOR CLEARING THE MIL/DTC
The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not tail.
A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
Clear the MIL and the DTC with a scan tool.
DIAGNOSTIC AIDS
An intermittent condition could be caused by an improperly installed or damaged EVAP canister purge valve or a temporary blockage in the EVAP canister purge valve. To repair a blockage in the EVAP system refer to Evaporative Emission (EVAP) System Cleaning.
TEST DESCRIPTION
See attachmet, sorry its blurry, i'll try to make a better copy
Steps 1-7
Ive got a 1997 camaro with 3.8 v6.. My car keeps tbrowing tbe p1441 code .. .. And when i accelerate it sputters like its trying to die out. Im getting realy bad gas mileage and i can also smell fuel really strong inside the car after ur throws the code.. Amy ideas?
April 2011 ROTM
Joined: Mar 2009
Posts: 22,001
From: Tokeland, Washington
ROTM Winner's Club
I moved your post to its own thread for you. first thing I would look at would be the charcoal canister, its behind the rear driver side wheel under the plastic. depending on what it is, if system is not working correctly the canister can fill with fuel. also check around and see if you have fuel leaking anywhere.
April 2011 ROTM
Joined: Mar 2009
Posts: 22,001
From: Tokeland, Washington
ROTM Winner's Club
look here, its for lt1 but gives you an idea what im talking about, it should be similar to yours. https://camaroforums.com/forum/lt1-l...-system-51219/ I recommend you download the factory service manual and or purchase a hard copy for your year. look here to download manual https://www.mediafire.com/?40mfgeoe4ctti 96 manual should work for you
Last edited by craby; Dec 29, 2020 at 07:33 PM.
Senior Moderator
January 2010 ROTM Winner
January 2010 ROTM Winner
Joined: Oct 2007
Posts: 18,306
From: The 'Burbs of Chicago
Start by replacing the evap canister purge valve/solenoid, it's one of the most common fail items with this code. The solenoid is located on the engine, above the passenger side valve cover.
Also check all the hoses and connections for any cracks or leaks.
Also check all the hoses and connections for any cracks or leaks.
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