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Check engine light is on, the code is p0455, which is for the emission evaporator, what could the possible problem be?

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A code p0455 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)
  • Other leak or damaged piece in EVAP system

With a p0455, 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, and/or
  • Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary

Posted on Apr 16, 2009

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I agree, just got this code for a 2005 Elantra, gas cap was loose, easy fix!

Posted on Sep 01, 2009

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Check Engine Light - Code numbers P1486 & P0455

Found on my jeep that the high quality vac line to the evap bottle had split on the under side.

Posted on Sep 03, 2008

  • 202 Answers

SOURCE: 1999 lincoln navigator obd code p0455

Either the fuel cap, or the evap solenoid on the charcoal canister. I'd start with the fuel cap.

Posted on May 27, 2009

  • 184 Answers

SOURCE: gm dignostic code p0455

A little late but check your gas cap first.

http://www.p0455.com

Posted on May 03, 2009

airjer995
  • 5332 Answers

SOURCE: Jeep evaporative emission system fault P0455

P0455 indicates a large leak in your Evaporation emissions system. This system stores fuel vapor from the fuel tank in a charcoal canister where it is later purged and burned in the engine.

The most obvious cause for this would be a loose gas cap. If the cap is tight then you can carefully inspect all of the evap hoses for cracks. It is very common for these to crack and leak on all chrysler products.

If you don't see anything obvious than your next step is to have the evap system smoke checked for leaks. The smoke will be introduced into the evap system under slight pressure. Wherever the smoke comes out is the source of the leak.

If no leaks are found than the usual suspect is the NVLD (Natural Vacuum Leak Detection) pump. Another common failure on chrysler products.

Hope that helps!

Posted on Nov 23, 2010

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I HAVE 2005 CHEVY EQUONIX CHECK ENGINE LIGHT ON HAS CODE-PO455 & PO496 (HELP)


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This is the 2 codes you requested and they say you have a leak in the emission sys.

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How to get engine light off with code p0455 for my chrysler 300 2006 touring


code p0455 refers to evaporative emission (EVAP) system--large leak detected===causes--hose connection/s--intake leak---EVAP cannister--EVAP canister purge valve
first check that the filler cap is on correctly ,tight and sealing

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What is code PO496 and PO455 for a 2007 Pontiac Grand Prix mean


P0496 is not alisted code.
P0455 - Evaporative Emission Control System Leak Detected Gross Leak (fuel vapors)
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors 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
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2 Answers

Service engine light on, p0455,


Hi,

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P0455 = Evaporative Emission Control System Leak Detected (gross leak)

What does that mean?

This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. 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.
Symptoms

You likely won't notice any drivability problems.

Causes

A code P0455 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)
  • Other leak or damaged piece in EVAP system

Possible Solutions

With a P0455, 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, and/or
  • Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary
All the best

Ben

Jun 05, 2011 | 2000 Ford Expedition

3 Answers

What is the error code p0455 on Chrysler Town and Country?


P0455....Evaporative Emission Control System Leak Detected (gross leak
the first thin to check is your gas cap

Nov 14, 2009 | 2003 Chrysler Town & Country

1 Answer

Having the same problem the other guy described.


First of all, these codes are what are called "Powertrain Trouble Codes' (that's what the "P" means P=Powertrain). TCM Request (Transmission Control Module = TCM). The request was to turn on the 'Check Engine" light.
P0720 - output speed sensor circuit malfunction
P0715 - Input speed sensor (turbin speed) circuit malfunction
P0442 - Evaporative Emission System Leak (Small Leak)
P0455 - Evaporative Emission System Leak (Large Leak)
Check fuel filler cap problems - for Evap Emiss leaks
Replace the pulse generators & have the trans fluid replaced/flushed.
The Main Catalyst System Efficiency Bank 1 Is P0420, not P0442
If you had P0420 code, the catalytic converter is shot... and that's an expensive component.

Oct 06, 2009 | 2001 Hyundai Elantra

2 Answers

Codes 441, 446, 455 on a 2005 Camery


P0441 Evaporative Emission Control System Incorrect Purge Flow
P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
P0455 Evaporative Emission Control System Leak Detected (Gross Leak)
http://www.toyotanation.com/forum/showthread.php?t=128923

Jun 04, 2009 | 2004 Lexus LS 430

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1999 lincoln navigator obd code p0455


Either the fuel cap, or the evap solenoid on the charcoal canister. I'd start with the fuel cap.

May 27, 2009 | 1999 Lincoln Navigator

1 Answer

Gm dignostic code p0455


A little late but check your gas cap first.

http://www.p0455.com

Oct 15, 2008 | 2005 Chevrolet Blazer

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Check Engine Light - Code numbers P1486 & P0455


Found on my jeep that the high quality vac line to the evap bottle had split on the under side.

Aug 14, 2008 | 1999 Jeep Wrangler

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