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Code P0440 replaced gas cap. half tank of gas light comes on

Posted by Anonymous on

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

dsacco86
  • 1077 Answers

SOURCE: 2002 Chevy Trailblazer w/101,000 mi has the P0440

OBD II Generic Check Engine Light Codes:

DTC Codes - P0400-P0499 – Auxiliary Emissions Controls

P0440 Evaporative Emission Control System Malfunction

Posted on Mar 22, 2009

  • 4 Answers

SOURCE: service engine light stays on code p0440 comes up

Evap cannister is located next gas tank . Sounds like vaccum leak problem with engine running open hood and listen for hissing noise in vaccum lines also crawl uder vehicle near gas tank and listen most of the time leak can be located like this.

Posted on Aug 15, 2009

  • 20 Answers

SOURCE: Check engine light comes on with code P0440.

A p0440 is a super generic evaporative emissions code.

the most common causes are:
-the fuel cap being loose/damaged
-EGR (exhaust gas recirculation) valve malfunction
-broken vacuum line anywhere (usually easy to find with smoke machine)
-broken filler tube/carcoal canister(where the gas goes in

if it's not any of those it's probably electrical which is a pain and a half to figure out....it shouldn't really cause any problems with the way the car runs....usually after some time other codes will appear and make it easier to diagnose.

hope this helps,
Thomas

Posted on Mar 04, 2010

roniecon
  • 6826 Answers

SOURCE: i have a 2002 monte carlo that has the engine code

Replace the e g r position sensor,it is the problem.

Posted on Mar 13, 2010

grendelynn
  • 5 Answers

SOURCE: fault code p0440 CHevy venture

I had that exact code a couple weeks ago. Mine needed new oxygen sensors. They(there are 2, only one was throwing a code, but I had both replaced) cost a little over $100 to have replaced.

Posted on Apr 23, 2010

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2 Answers

OBD 440 Error and Check Engine light ON. Already replaced new Gas Cap, Solenoid behind Gas Tank. Still the Light comes on.


Now have a repair shop do the proper testing & resolve

Need system diagrams,scan tool & evap smoke machine

Feb 07, 2013 | 2001 Toyota Camry

3 Answers

I HAVE CODE 0440 MY SERVICE SOON LIGHT ON I FIX FUEL CUP BUT STILL ON LIGHT WHAT TO DO


P0440 - Evaporative Emission Control System Malfunction
Possible causes- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking Tech notes Loose fuel tank filler cap is the most common cause that triggers the P0440 code.

Sep 17, 2012 | 2002 Pontiac Grand Prix

3 Answers

In the solution for the po440 code on the 2001 toyota camry ce, what's a filler cap?


The filler cap is the GAS CAP. This code will come on if you forgot to tighten ( or drove around with it hanging) your gas cap after filling up the gas tank. If this is the case then all you have to do is tighten the gas cap until 3 clicks are heard. The code will reset itself after several days of driving. If the code does not reset then you may have a defective gas cap or another leak in the fuel emission system.

99% of the time the code is caused by a gas cap that was not tightened properly.

here are more details for P0440
http://www.obd-codes.com/p0440

May 04, 2011 | 1998 Toyota Camry

3 Answers

I need to know what p0440 means


The technical meaning of the code is Evaporative Emission Control System Malfunction.

P0440 EVAP System No Flow can occur during the following conditions:
Fuel filler cap might be loose
  • Leak in the fuel tank, fuel filler neck or fuelsending unit 'O' ring.
  • PCM might have failed.
  • Purge vapor line might have clogged.
  • Purge or vent solenoid power circuit is open .
  • Fuel tank pressure sensor is damaged, disconnected or it failed.
  • Charcoal canister is filled with fuel or moisture.

Mar 16, 2011 | Buick LeSabre Cars & Trucks

1 Answer

03 cavalier shows p0440 code startrs stumbs and dies


P0440 code translates to Evaporative Emmission System (EVAP). I suspect that your gas cap is not fitting tight enough on your tank to build up enough pressure to keep the EVAP sensor from detecting a fault. You may have to replace your gas cap or check to see if it was tight. It may take a few trips with the fault fixed to extinguish the light and more to get rid of the P0440 code in your computer. Removing the cable on your battery, the negative one for about two or three minutes may be enough to make your computer forget.

Feb 15, 2011 | Chevrolet Cavalier Cars & Trucks

1 Answer

Code P0440. Have tried changing the gas cap but still service engine light on


2003 GMC Envoy has a problem with the gas tank. The plastic tank cracks at the filler neck inlet, causing some gas leakage and code P0440. GMC replaces gas tanks for free (up to 160?).

Jun 16, 2010 | 2003 GMC Envoy

1 Answer

Service engine light stays on code p0440 comes up have replaced gas cap light came back on where are the sensers loacted as well as the evaporative emission canister as well a diagram for hose routing


Evap cannister is located next gas tank . Sounds like vaccum leak problem with engine running open hood and listen for hissing noise in vaccum lines also crawl uder vehicle near gas tank and listen most of the time leak can be located like this.

Aug 02, 2009 | 2000 Chevrolet Blazer

2 Answers

Check engine light on. Code P0440.


wow thermostat >>>> shucks i believe its evep emissions code like faulty gas cap ....you can reset any computer the chck eng light will come on in 50 to 100 miles if not fixed....

May 07, 2009 | 2001 Buick Regal

1 Answer

Ch. engine code P0440


try replacing the gas cap

Oct 17, 2008 | 1996 Pontiac Grand Am

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