Question about 2008 Chevrolet Cobalt

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2007 chevrolet cobalt small emission leak code P0456 any help would be appreciated..

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6ya6ya
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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: yellow emission engine light comes on

Is that P0442?, if so it may be due to a loose gas cap or leaking gas cap check valve.

Posted on Oct 15, 2008

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SOURCE: check engine light emission leak

youll have to take it a shop and have them fill the system with "smoke" and examine the entire system for the "smoke". the smoke will pour out from where ever it is leaking from

Posted on Jul 15, 2009

  • 1 Answer

SOURCE: 2007 Chevrolet Cobalt Sedan LT Engine won't Start

i have a cobalt too and my car had done the same thing..wut my problem was that my fuse had blown out. look at ur fuse box and there should be one that would be for run or crank, check and make shure those arent blown and if not it may be ur fuel pump..ur car may not be getting enough fuel pressure for it to turn on.

Posted on Sep 23, 2009

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SOURCE: is there a transmission fluid dipstick on 2007 cobalts

big red
the leak migh be coming from the tranny pan check it out just remove the pan replace the seal and filter and fill it back up it will just take you a trip to the autopart store and 20 minutes to get it fix

Posted on Oct 23, 2009

SOURCE: I have a 2006 Chevy Cobalt with the check engine

Did you get gas shortly before the light came on? It's not uncommon for a loose gas cap to set this code. Take the cap off and look at the seal. If it's cracked replace it with a new OEM cap. If not, reinstall it and make sure it's on all the way. Then you can clear the code and see if it comes back.

Posted on Jul 24, 2010

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1 Answer

How to diagnose code p0456 on beetle


P0456 Volkswagen - EVAP System Very Small Leak Detected

- 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
- Evaporative Emission (EVAP) canister or fuel tank leaks
- Evaporative Emission (EVAP) system hose leaking
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Sep 30, 2015 | 2008 Volkswagen New Beetle

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P0456 Evaporative Emissions System Small leak detected P0457 Evaporative Emission Control System Leak Detected None of these codes would cause a no start ! Does the truck engine crank over no start or no crank no start ?

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I'm getting p0456 code on a 2007 dodge ram 2500


this is a code for a small leak in the evaporative emission system. to properly diagnose you will need a smoke machine. but it is usually the vent solenoid on the charcoal canister

Jul 25, 2014 | 2007 Dodge Ram 2500

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Chevy suburban


Hi Jeff
Fault code P0456 means evaporator emission control small leak detected.
you need to check the tank filling cap, evaporator valve, hoses and connection for leak.
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Apr 09, 2014 | 2003 Chevrolet Suburban 1500

1 Answer

P4056


As far as I know there is no code number p4056 in the Toyota code book. It might be:
Error Code: P0456 Fault:
Evaporative Emission (EVAP) System - Small Leak Detected
Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Fuel Cap not fully attached.
Evaporative Emission (EVAP) System leaking/faulty.
Evaporative emission (EVAP) pressure sensor.
Possible Solutions:
Check Fuel Cap.
Check Evaporative Emission (EVAP) System.

Nov 25, 2013 | 2007 Toyota Corolla

1 Answer

Engine light stays on code # P0456


P0456 is Evaporative Emissions System - Small leak detected.

More often than not it is a gas cap that is either not put on corrert or it has failed to hold the seal.
Less likely causes are:
  • 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 02, 2011 | 2002 Jeep Grand Cherokee

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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


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


P0440....Evaporative Emission Control System

Nov 12, 2010 | Dodge Neon Cars & Trucks

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

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2005 Dodge Grand Caravan codes P0456 and P0303. Engine light on. Changed Gas cap. Need to pass inspection. Please help with diagnosis.


p0456--emission control system leak(verysmall) leak, check all hoses to emission controls, cylinder 3 missfire detected. could be plugs, wires, or coil.this is code p0303,

Jun 04, 2009 | 2005 Dodge Grand Caravan

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