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Po440 code 96 nissan pu 2.4 engine

Replaced gas cap

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Hi Glenn:
This indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

A code P0440 could mean one or more of the following has happened:
The gas cap is not installed or working properly
The purge solenoid has failed
The canister is plugged and not working properly

With a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
Inspect the EVAP system for cuts/holes in tubes/hoses
Inspect for damaged or disconnected hoses around the Evap purge solenoid
Check and/or replace the sensor
Check and/or replace the purge valve
Have a professional use a smoke machine to detect leaks

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Posted on Feb 22, 2012

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Posted on Jan 02, 2017

c17hydro
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SOURCE: 1997 toyota camry check engine light on,code po440,po420,po441,

P0420 is catalyst system efficiency below threshold (bank 1)

P0440 is evaporative emission control system malfunction

P0441 is evaporative emission control system incorrect purge flow

Posted on Mar 29, 2009

  • 625 Answers

SOURCE: 2000 cavalier check engine light code po440

I would try to replace the gas cap first. If that doesn't solve it, you wll have to take it yor local repair shop and have them perform a smoke test. The technician can pinpoint your exact problem. I just fixed a 2003 Cavalier and it was a split gas tank. No other way to find that problem without the smoke.

Posted on Jun 08, 2009

  • 1 Answer

SOURCE: 2001 Camry code po440,po441,po446 after engine

2001 camry code po440,po441,po446
what kind of problem and how can be solved
sam

Posted on Jun 30, 2009

  • 38 Answers

SOURCE: 2003 monte carlo ss po440

you will need to drive about 50 miles till the computer checks the system since it was reset. Your check engine light may come back again, if it does run a vacum test..

Posted on Jul 23, 2009

  • 12104 Answers

SOURCE: I have a service engine light on

it can be in 2 spots it is usually under the truck by the fuel tank a black boxy shape mounted to frame the other spot is behind the throttle body

Posted on Oct 09, 2009

Testimonial: "Thank you,, this problem all started approx 2 weeks after I removed the throttle body for cleaning, this is where I will focus on"

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2 Answers

How to fix po440 trouble code


http://www.obd-codes.com/p0440

do the easiest cause first... did you recently get gasoline and didn't put the fuel cap back on correctly?

CLEAR the trouble code and re-seat the gas cap properly & then see if the check engine lights up with the same code... then go from there

i've embedded gbob59s link because it should have worked the first time

Apr 10, 2015 | 1997 Volkswagen Cabrio

1 Answer

Pontiac grand am I had a diagnostic reading at autozone for diagnostic codes po128,po440 and p1189 don't know what they mean for a 2003 Pontiac grand am gt 3.4 liter and v6 engine vehical


PO128 -- engine coolant low or thermostat not working
P0440 - EVAP system malfunction, gas cap loose - Cat convertors missing from car can cause this
P1189 - Engine Oil Pressure Switch Circuit -- CAT CONVERTORS MISSING FROM CAR can cause this.

Jan 28, 2015 | 2003 Pontiac Grand Am

1 Answer

P0440 engine code


po440 is a large leak in - Evaporative System, A bad fuel cap seal will cause this also. remove cap and replace it on tight, and see if light goes out. Check all vacuum hoses, Under hood, and car. carefully, for a leak.Even a small hole will cause a vacuum leak and turn check engine light on. Good-Day!

Aug 24, 2014 | Nissan Pathfinder Cars & Trucks

1 Answer

Po440 code 96 nissan pu 2.4 engine


This indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

A code P0440 could mean one or more of the following has happened:
The gas cap is not installed or working properly
The purge solenoid has failed
The canister is plugged and not working properly

With a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
Inspect the EVAP system for cuts/holes in tubes/hoses
Inspect for damaged or disconnected hoses around the Evap purge solenoid
Check and/or replace the sensor
Check and/or replace the purge valve
Have a professional use a smoke machine to detect leaks

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Feb 22, 2012 | Cars & Trucks

2 Answers

Service engine soon code po440 2002 chevy trailblazer


A code P0440 could mean one or more of the following has happened:
  • The gas cap is not installed or working properly
  • The purge solenoid has failed
  • The canister is plugged and not working properly
With a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
  • Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
  • Inspect the EVAP system for cuts/holes in tubes/hoses
  • Inspect for damaged or disconnected hoses around the Evap purge solenoid
  • Check and/or replace the sensor
  • Check and/or replace the purge valve
  • Have a professional use a smoke machine to detect leaks
Get a new gas cap first to try.
thanks

Jul 30, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

Engine light on code is po440


P0440 Fuel tank vapor emission problem.
Could be as simple as a leaky gas cap.....or a missing gas cap.

Have you purchased gas and left the engine running as you filled it?
That will turn on the light too.

The P0440 is one of the most common codes and pops on the dash of 50% of cars on the road as they get older on a weekly basis.
An extremely small vapor leak on the fuel system will pop this code on.
Most of the time.....this code cannot be fixed......the answer is to buy a cheap OBD2 code reader and remove the code yourself every time it pops on........and on the 50% of cars with it......it shows up about 2 times a week.
When the engine light is on,you will loose 20% of gas mileage and has 20% higher emissions.....so turn it out!
Some cars will not go into overdrive with this light on.

Sep 04, 2009 | Toyota Solara Cars & Trucks

3 Answers

Toyota seinna po440, po441, po446


you have to understand that there is a leak in the system other than the gas cap for the evaporative system. The system needs to be professionally closed, and smoke introduced into to find the leak, and a through component check, eg.. purge valve vapor canister vent solenoid all functioning correctly

Jun 17, 2009 | 1998 Toyota Camry

2 Answers

2001 Camry code po440,po441,po446 after engine


2001 camry code po440,po441,po446
what kind of problem and how can be solved
sam

Jun 08, 2009 | 1998 Toyota Camry

3 Answers

2000 cavalier check engine light code po440


P0440 - Evaporative Emission (EVAP) System


evaporative emission (EVAP) system has a large leak.
Check the gas cap or vent valve. these are the most common problems.


The Powertrain Control Module (PCM) at different times performs various tests on the EVAP system. OBD II Enhanced EVAP systems are in place to keep fuel tank vapors from venting into the atmosphere, and instead purges them into the engine to be burned. Regular pressure tests are conducted by the PCM to monitor the sealed system for leaks. The PCM monitors the EVAP system pressure by watching the Fuel tank pressure sensor (FTP). When the sensor indicates a small leak in the EVAP system, this code is set.


Here are some additional causes.

* A small leak in any of the EVAP hoses or fuel tank hoses
* A small leak in the purge valve or vent valve
* The EVAP Canister may be leaking

Jun 06, 2009 | 2003 Chevrolet Cavalier

2 Answers

2002 Chevy Trailblazer w/101,000 mi has the P0440 OBD II Code. Just replaced the plugs with Iridiums @ 100K, all connections are good and gas cap is seated properly . . . help!!!


i have 2003 trailblazer ltz 153 000 mileage i have code po440 .i changed gas cap and turned off the chech engine light... i made 300 miles and it was good and today morning i drove a mile and light turned on ..... what do i have to fix ...thanks

Mar 22, 2009 | 2003 Chevrolet TrailBlazer

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