Question about Dodge Neon

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Hi I have a Dodge Neon 2003 with engine codes P0456 and P0440. What do these mean and how do I fix them

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P0456....Evaporative Emission Control System Leak Detected (very small leak)


P0440....Evaporative Emission Control System

Posted on Nov 12, 2010

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Don't top off at the gas station

Posted on Oct 30, 2012

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Gas cap... 11 bucks at autozone just had to replace mine for the same codes and boom fixed no more engine light

Posted on Dec 18, 2010

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Its a Evaporative Emissions problem. A repair shop will have to diagnose and recommend repairs.

Posted on Nov 12, 2010

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1 Answer

Emission test failure, codes P0456, P0441 and P0340 on a 2003 Dodge Neon, are these inexpensive to get fixed?


Google the codes to learn about them
& the system with a possible failure

How expensive a repair is, as you know,
will be told to you at a repair shop ,AFTER
you pay for the diagnostic process, to
find any issues

Sep 13, 2013 | 1998 Kia Sportage

1 Answer

2003 DODGE DURANGO CHECK ENGINE LIGHT ON, CODES P0456, P0562 & P0700, ALREADY REPLACED GAS CAP, HOW CAN I FIX?


Is not a gas cap,could be clog cannister,low voltage [562],700 transmission control system.

Mar 30, 2013 | 2003 Dodge Durango

1 Answer

Diagnostic code p0456 and p0440 on 2003 dodge durango


p0456
Evaporative emission (EVAP) control system leak detected (very small leak)
p0440
Evaporative emission control system malfunction

Sep 08, 2010 | 2003 Dodge Durango

1 Answer

2003 DODGE DURANGO CODE P0456


Usually this P0456 code is caused by an incorrect or faulty gas cap. Filling the fuel tank with the engine running could conceivable cause this code as well or if the cap wasn't properly tightened. Any of the following could also be the cause:
  • 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

Aug 14, 2010 | 2003 Dodge Durango

1 Answer

I have an 03 Ram 1500, engine light is on, I had


p0440 - Evap. system performance (this could be something as simple as not turning the gas cap several times after you fill up.

p0456 - Evap leak monitor Small leak detected. - Could be related to the previous code.

p2106 - Throttle Actuator Control System - Forced limited power : This one you might have noticed the vehicle running rough, overdrive not working properly and cruise control will not set.

p2175 - Throttle Actuator Control System - Low airflow detected.

What you might want to try first is have the codes cleared which most auto parts stores offer this for nothing (unless you have a programmer then you can do it yourself). Pour in some fuel injector cleaner into your gas, put a new air filter on. And when you fill up your gas tank, crank the cap several times when you put it back on.
See if the codes come back on after that.

Nov 21, 2009 | 2004 Dodge Ram 1500

1 Answer

P0442 p0456 p0440 dodge durango engine codes my girlfriend was driving and diddnt put oil n there 4 a while and the engine cutt off and locked...wat should i do?


Buy a used engine from a reputable wrecking yard. That is the least expensive soulution. Then..........teach your girlfriend, where the dip-stick is!

May 27, 2009 | 2002 Dodge Durango

1 Answer

P0442 p0456 p0440 dodge durango engine codes


replace your evap solenoid this should fix it.

Mar 17, 2009 | 2002 Dodge Durango

2 Answers

2002 chrysler neon error code p0456


a small evap leak is often interpreted as a loose gas cap , which it can be , it means the evap systems integrity has been breached , it can be an electrical solenoid , switch or just a vacuum line in the system . a bidirectional scanner can run the evap test after checking the gas cap , most well equipped shops can hook up a smoke machine to the evap system service port and run the smoke test , it there is a leak you will see the smoke , makes the diagnosis quickly . get an estimate from a reputable shop , by the way this problem has no effect on drivability , but should be fixed . cheers

Jan 13, 2009 | 2003 Dodge Neon

5 Answers

Diagnostic code P0456 for 2003 Dodge Ram 1500 5.7


P0456 = EVAP Emissions Control System Leak Very Small

Is the gas cap on tight or is the seal damaged? If it needs replacement, get it from the dealer.

Aug 22, 2008 | 2004 Dodge Ram 1500

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