Question about Cars & Trucks

Open Question

2001 nissan altima with code p1441 - Cars & Trucks

Posted by on

Ad

5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 1348 Answers

SOURCE: what those code p1441 manufacturer control auxiliary emission controls mean

what you want to do is take it to nissan and scan it with the consult2 diagnostic system to tell you which of the many things in the system have failed.
the EGR is the most common.

Posted on May 28, 2009

Ad
cansmo
  • 2431 Answers

SOURCE: I have a 2001 Nissan

On the nissan is there a swirl chamber code that comes on also, If it does then its truly a EGR code, but if the code is 1441 and 400 then its not the EGR, 400 is the EGR system not the EGR you r fix and solution is to solve P1441 the 400 is for function only. the failure is 1441 here is the definition Fuel filler cap, replace your gas cap and if its the type that click as you close the cap make sure it does Leave the EGR alone

Posted on Jun 13, 2011

ZJLimited
  • 17970 Answers

SOURCE: 2001 nissan altima

DTC P1441 - Vacuum Cut Valve Bypass Valve
Codes is for a very small leak code, usually the gas cap is the most common problem. Even if the cap looks ok it may need to be replaced. Als check the next items:
- Incorrect fuel tank vacuum relief valve.
- Incorrect fuel filler cap used.
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap.
- Leak is in line between intake manifold and EVAP canister purge volume control solenoid valve.
- Foreign matter caught in EVAP canister vent control valve.
- EVAP canister or fuel tank leaks.
- EVAP purge line (Pipe and rubber tube) leaks.
- EVAP purge line rubber tube bent.
- Blocked or bent rubber tube to EVAP control system pressure sensor.
- Loose or disconnected rubber tube.
- EVAP canister vent control valve and the circuit.

Te same problem we foudn in a Sentra 1.8L, then removed the vacuum cut valve bypass valve and tested it. With no voltage across the terminal we could blow through one hose and it comes out the other, with voltage we can feel the unit buzzing (it is essentially an electromagnet) but still no change, airflow is not stopped. Pulled the metal cage off and plunger dropped out. The exterior sealing o-ring looks okay. It seems like the plunger isn't sealing off internally when the coil is energized, even if pressed the plunger down by hand with good force it would not seal. That said I think I can safely state that this item is defective and the cause of the check engine code.

Our minimal issue is that the local Nissan dealer wants over $100 for solve this, that is a fairly common problem. If you can't seem to find an online source for this part,I suggest visit some junkyard.

Keep in mind that the P1441 is a very hard code to diagnose, as it's very "general". There are a list of things that can cause this code, and there is a Technical Service Bulletin issued by Nissan that states it can even be faulty ECM (on-board computer) programming.

zjlimited_605.gif

zjlimited_1706.jpg

COMPONENT DESCRIPTION
The vacuum cut valve and vacuum cut valve bypass valve are installed in parallel on the EVAP purge line between the fuel tank and the EVAP canister.

The vacuum cut valve prevents the intake manifold vacuum from being applied to the fuel tank.

The vacuum cut valve bypass valve is a solenoid type valve and generally remains closed. It opens only for on board diagnosis.

The vacuum cut valve bypass valve responds to signals from the ECM. When the ECM sends an ON (ground) signal, the valve is opened. The vacuum cut valve is then bypassed to apply intake manifold vacuum to the fuel tank.

Here are the reasons that can cause this failure code:

zjlimited_606.gif

This diagnostic process will require a scantool with advanced diagnostic capabilities. The vacuum bypass valve is more than likely the problem, but I cannot be sure until all of the components are properly tested. You can try to replace the valve but I cannot guarantee that this will solve your issue.

After that you replace this device, if the light goes out and stays off for 200-300 miles, then the vehicle will pass inspection. The vehicle must complete a drive cycle after the light goes off so that it will pass inspection. This is an emission issue, and will not cause any issue with driveability.
You should be able to remove the valve without dropping the rear suspension, but it is a tight fit. I would suggest a swivel socket to remove the bolts that hold the valve on.

Hope this helps.

Posted on Aug 10, 2011

ZJLimited
  • 17970 Answers

SOURCE: i have a 2001 nissan

DTC P1441 means a warning about EVAP system flow during non purge condition.

This deals with the purge solenoid, vent solenoid, charcoal canister, all the vacuum lines in this system, as well as the gas cap. Any one of these components may contribute to this code being set. All the wiring should be tested including the connectors for any problems. Vacuum lines should be checked for cracks or loose connections. The canister may be damaged or not working properly.

However, the most common cause of this code on nissans is the evap vent control valve. It is located on the evap canister, under the rear of the car by the gas tank. Its the only electrical device attached to the canister itself.

Previously, there's a few things to check here. If you are sure that you don't have a wiring harness problem (these are notorious for the harness wearing through) then you need to check both the components that the code covers. This code covers both the vacuum cut valve bypass valve (the electronic solenoid) and the vacuum cut valve itself (small round plastic valve.) Here's a picture of both of them attached to each other:

zjlimited_696.gif

If you are absolutely sure that the electronic solenoid is doing it's job, and that none of the hoses are pinched or blocked, you need to check the vacuum cut valve for functionality. Here's how you do that:

zjlimited_697.gif

1. Plug port (C) and (D) with fingers.
2. Apply vacuum to port (A) and check that there is no suction from port (B).
3. Apply vacuum to port (B) and check that there is suction from port (A).
4. Blow air in port (B) and check that there is a resistance to flow out of port (A).
5. Open port (C) and (D).
6. Blow air in port (A) check that air flows freely out of port (C).
7. Blow air in port (B) check that air flows freely out of port (D).

Also check to make sure that all hoses are going to the correct places.

Keep in mind that the P1441 is a very hard code to diagnose, as it's very "general". There are a list of things that can cause this code, and there is a TSB (Technical Service Bulletin) issued by Nissan that states it can even be faulty ECM (Engine Control Module or On-board computer) programming.

Here is a list of possilble causes:
Incorrect fuel tank vacuum relief valve
Incorrect fuel filler cap used
Fuel filler cap remains open or fails to close.
Foreign matter caught in fuel filler cap.
Leak is in line between intake manifold and EVAP canister purge volume control solenoid valve.
Foreign matter caught in EVAP canister vent control valve.
EVAP canister or fuel tank leaks
EVAP purge line (pipe and rubber tube) leaks
EVAP purge line rubber tube bent.
Blocked or bent rubber tube to EVAP control system pressure sensor
Loose or disconnected rubber tube
EVAP canister vent control valve and the circuit
EVAP canister purge volume control solenoid valve
Absolute pressure sensor
Fuel tank temperature sensor
O-ring of EVAP canister vent control valve is missing or damaged.
Water separator
EVAP canister is saturated with water.
Fuel level sensor and the circuit
EVAP control system pressure sensor

Here is the TSB issued by Nissan...
Classification: EC00-018a
Reference: NTB00-059A
Date: August 30, 2000

2001 PATHFINDER; MIL "ON" DTC P1441 (EVAP VERY SMALL LEAK) STORED IN SELF DIAGNOSIS RESULTS
APPLIED VEHICLE: 2001 Pathfinder(R50)
SERVICE INFORMATION
If an applied vehicle has a MIL "ON" with DTC P1441 (EVAP Very Small Leak) stored in Engine Self Diagnosis results, the cause may be the ECM program.

There is an updated ECM program available to address this incident if it should occur.

Hope this helps; keep us updated about your advance.

Posted on Sep 09, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

P1441 engine code


This is an emission code for a small leak in the evap system. There are many causes but the most common is a loose gas cap. There could also be loose disconnected hoses under the hood near the air filter or a problem with the evap canister itself

Jul 09, 2015 | 2001 Nissan Altima

1 Answer

What does the code no DTC detected mean on a 2001 Nissan pathfinder


DTC P1441 means there were no scan results. There may be some troubles that can't be detected but the fact that your Nissan is running fine seems at odds with that long list of issues cobbled together by the repair shop.

Feb 18, 2015 | 2001 Nissan Pathfinder

1 Answer

What does no dtc code on a 2001 Nissan pathfinder mean


DTC = Diagnostic Trouble Code.
No DTC means no trouble.

Feb 18, 2015 | 2001 Nissan Pathfinder

1 Answer

Where is the vacuum cut valve located,,, the code reads p1441 what to fix it or replace it my self.....


I just found the answer that
The vacuun cut bypass valves I deal with are in the evap emissions hoses near the charcoal canister valve is white in color and have no electrical connections just (4) 5/8" vacuum lines. Two of those hoses go to a solonid valve with a two wire electrical connection. Gasoline in the signal hoses from over filling the tank can cause the tank pressure sensor to send the wrong evap emission information to the Engine computer that in turn sets the P1441 code. Those hoses are on the filler neck to the gas tank pull them off one at a time and see if one has about 1 oz of fuel in the rubber hose (no smoking). Good luck for you!

alldata car repair database

Aug 01, 2012 | 2001 Nissan Altima

1 Answer

I have a 2001 Nissan Altima & my Service Engine Soon lite comes on. When checked these are the error code's; P1441 & P400. So far I put in a new EGR but still the lite goes back on. Please help...


On the nissan is there a swirl chamber code that comes on also, If it does then its truly a EGR code, but if the code is 1441 and 400 then its not the EGR, 400 is the EGR system not the EGR you r fix and solution is to solve P1441 the 400 is for function only. the failure is 1441 here is the definition Fuel filler cap, replace your gas cap and if its the type that click as you close the cap make sure it does Leave the EGR alone

Jun 13, 2011 | Nissan Altima Cars & Trucks

2 Answers

Code1126 says thorttle relay i dont know where it is, but i also think that that is the sensor it self.


Here is what P1126 means. The Throttle Control Motor Relay is defective. Now, you have a normal throttle and not an electronic one so I would recheck the code as it is probably the throttle position switch since

Sep 26, 2010 | 2000 Nissan Altima

1 Answer

What those code p1441 manufacturer control auxiliary emission controls mean


what you want to do is take it to nissan and scan it with the consult2 diagnostic system to tell you which of the many things in the system have failed.
the EGR is the most common.

May 28, 2009 | 2001 Nissan Xterra

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

43 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...