Question about 2004 Dodge Ram 1500

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2003 Mitsubishi eclipse with diagnistic code P0456

I work at a nissan dealership and they gave me that code which means small evap leak...I was just wondering if anyone may know which part on my car that is so i don't have to spend the money for them to figure out where the leak is coming from and THEN get me the part to replace it...please please hurry!! i need to know soon before the snow falls....

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  • sexychclte69 Nov 12, 2008

    yeah i know that, but its not my gas cap i already checked. I was just wondering if anyone knew of a part for my mitsubishi that needed to be replaced from that code..please help.

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Small evap leak usually means that your fuel cap was not completely tightened or it needs replaced

Posted on Nov 12, 2008

  • james lee Nov 12, 2008

    went to some mitsibishi websites and most of them say the same thing if not the cap then it would either be th vent hose that runs along side the filler hose or its the evap pump hope that helps

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3 Answers

What does code p0442 mean


P0442: Evaporative Emission (EVAP) System Small Leak Detected
With a P0442, the most common repair is to:
Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, or
Inspect the EVAP system for cuts/holes in tubes/hoses
China OBD2 car diagnostic tools wholesale on CareUCar

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Mil light


Here's a link to it,best to check the canister and hoses.Gas cap could be leaking.

Dec 12, 2013 | 2003 Nissan Pathfinder

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What does the code po456 mean?


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

Jan 08, 2013 | 2005 Ford Focus

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When i make a complete stop the cart takes a while to accelerate?


Millions of cars have that issue

The Evap System, will most easily be diagnosed &
your Gross Leak resolved,if you have a repair shop
with an EVAP Smoke Machine put on that system

The Gas Cap would be a PO442 (small leak) The way you
remember is, from the Hurst Olds 442, from the 1960's

The smoke test will blow some out the place of the leak,
like a rotted hose or broken evap valve.


Slow Acceleration---you work on after all check light issues
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I need to know whatpo455 code means


P0455 NISSAN - EVAPorative Emissions Control System Gross Leak Detected. Possible causes - Missing or loose fuel cap (most common)
- 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 (not common)

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2003 Nissan Sentra SER Spec-V safe/limp mode help?!?! My car is in safe mode , will not go past 2.5RPM. I had it scanned and showed the following codes: P1446 P1456 P0650 Please help with cheap quick...


error p1446 is a closed control valve on evap .. that is located behind the tire on the drivers side .. you can sometimes clean that .. that can also be caused by a bad or loose gas cap ..

code p1456 means a small evap. leak .. there is a smoke test to help find the leak if you have trouble ..

P0650 Malfunction Indicator Lamp (MIL) Control Circuit Malfunction (computer)

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I have 2000 chevy impala 3.4 engine i have check engine light with this code p0442 took it it to auto zone they said it was a small leak dont know where to start


This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. 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.
code P0442 most likely means one or more of the following has happened:
  • A loose or improperly affixed gas cap
  • A non-conforming gas cap (i.e. not factory/original brand)
  • A small leak/hole in a fuel vapor hose/tube
  • Other small leak in EVAP system
  • Faulty vent o-ring seal
With a P0442, the most common repair is to:
  • Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
  • Otherwise, replace the gas cap, or
  • Inspect the EVAP system for cuts/holes in tubes/hoses

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1 Answer

P1456 code


Trouble Code: P1456


EVAP System Very Small Leak (0.020") Detected

Possible Causes:


EVAP control system pressure sensor is damaged or has failed

EVAP purge solenoid is damaged or has failed

EVAP canister vent control valve is damaged or has failed

Fuel tank cap not tightened properly or the wrong part number

Fuel tank temperature sensor is damaged or has failed

Fuel tank vacuum relief valve is damaged or has failed

Very small leak in the EVAP canister or in the fuel tank area

ORVR system is damaged or has a small leak in a component

Refueling control valve is damaged or has failed

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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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