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Code problem P0440 Nissan Altima 2001 - Altima Nissan Cars & Trucks

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6 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

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Posted on Jan 02, 2017

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localwonder
  • 6784 Answers

SOURCE: whate is code 1400 and 400 in nissan altima 2001.

P1400 DPFE Circuit Low Input
P0400 Exhaust Gas Recirculation Flow Malfunction

These codes represent a fault in the Auxiliary Emission Controls. Here's a brief describing of the EGR valve. The EGR stands for exhaust gas recycling valve. During cruising speeds, the valve opens allowing exhaust into the intake manifold. The purpose of this is to cool the temperature of the combustion inside the cylinder as the spark plug fires. This in turn, lowers emissions. If the EGR is stuck in either direction(open/closed), it can effect the idle of your vehicle and can stall it out at times. it can also trip the engine light as well. Good rule of thumb is to clean out the carbon out of the intake manifold thoroughly before you install a new EGR. this will prevent the engine light form coming on once more. if the carbon build up is high, chunks of it will jam the EGR, causing it to fail over and over.


Please rate and god bless.

Posted on Mar 26, 2009

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  • 25 Answers

SOURCE: where is my fuel filter 2001 nissan altima

Most of the time there is an inlet screen/filter in fuel tank attached to fuel pump. But there should be another filter between tank and fuel rail. it should be located on the firewall, so if you work backward from an injector toward the gas tank you will bump right in to the filter along the way.

Posted on Apr 17, 2009

  • 3640 Answers

SOURCE: engine repair code P0325

po325--ignition system or missfire.

Posted on Sep 16, 2009

techbuster
  • 5081 Answers

SOURCE: How do I change the passenger side headlight bulb on 2001 Altima

Open up the hood, and go in behind the fixture where the light is located. Sometimes there is an access panel on top. Open it and reach down inside and grab the bulb’s socket. Twist the socket a quarter turn counter clockwise, and pull out the socket. Grab the bulb, and pull it straight out. To replace the new bulb, never touch it with your bare fingers, as this will greatly shorten the bulb's life, if it even work's at all. Use a tissue or something else in that order to handle the new bulb. Push the new bulb into the socket, put the socket back into the housing, and twist a quarter turn clockwise to secure the socket into the fix.Seems that you have to remove the coolant bottle(two screws), and also the unscrew the washer fluid bottle, after that you can reach the socket that holds the bulb. There is a wire that holds the bulb in. if you loosen the screw you can tip up the wire and be careful to leave it in place...also the long side of the wire seems to connect to ground wire for the light...

Posted on Oct 14, 2009

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.

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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:

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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

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Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!



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